fix(api-reference): add missing Since/Type in Astro global & APIContext

* See withastro/astro#4986 for `site`, `generator`, `url`, `clientAddress`, `props` and `redirect`
* See withastro/astro#6721 for `locals`
* See withastro/astro#9021 for `preferredLocale` and `preferredLocaleList`
* See withastro/astro#9101 for `currentLocale`

Author: ArmandPhilippot

src/content/docs/en/reference/api-reference.mdx

@@ -165,6 +165,8 @@ See also: [`params`](#params)
 
 ### `Astro.request`
 
+**Type:** `Request`
+
 `Astro.request` is a standard [Request](https://developer.mozilla.org/en-US/docs/Web/API/Request) object. It can be used to get the `url`, `headers`, `method`, and even body of the request. 
 
 ```astro
@@ -180,6 +182,7 @@ With the default `output: 'static'` option, `Astro.request.url` does not contain
 
 ### `Astro.response`
 
+**Type:** `ResponseInit & { readonly headers: Headers }`
 
 `Astro.response` is a standard `ResponseInit` object. It has the following structure. 
 
@@ -211,6 +214,8 @@ Astro.response.headers.set('Set-Cookie', 'a=b; Path=/;');
 
 <p><Since v="1.4.0" /></p>
 
+**Type:** `AstroCookies`
+
 `Astro.cookies` contains utilities for reading and manipulating cookies in [server-side rendering](/en/guides/server-side-rendering/) mode.
 
 ##### `get`
@@ -414,6 +419,8 @@ if (!isLoggedIn(cookie)) {
 
 <p><Since v="1.0.0-rc" /></p>
 
+**Type:** `URL`
+
 A [URL](https://developer.mozilla.org/en-US/docs/Web/API/URL) object constructed from the current `Astro.request.url` URL string value. Useful for interacting with individual properties of the request URL, like pathname and origin. 
 
 Equivalent to doing `new URL(Astro.request.url)`. 
@@ -441,6 +448,8 @@ const socialImageURL = new URL('/images/preview.png', Astro.url);
 
 <p><Since v="1.0.0-rc" /></p>
 
+**Type:** `string`
+
 Specifies the [IP address](https://en.wikipedia.org/wiki/IP_address) of the request. This property is only available when building for SSR (server-side rendering) and should not be used for static sites.
 
 ```astro
@@ -453,12 +462,16 @@ const ip = Astro.clientAddress;
 
 ### `Astro.site`
 
+**Type:** `URL | undefined`
+
 `Astro.site` returns a `URL` made from `site` in your Astro config. If `site` in your Astro config isn't defined, `Astro.site` won't be defined.
 
 ### `Astro.generator`
 
 <p><Since v="1.0.0" /></p>
 
+**Type:** `string`
+
 `Astro.generator` is a convenient way to add a [`<meta name="generator">`](https://html.spec.whatwg.org/multipage/semantics.html#meta-generator) tag with your current version of Astro. It follows the format `"Astro v1.x.x"`.
 
 ```astro mark="Astro.generator"
@@ -593,6 +606,8 @@ And would render HTML like this:
 
 ### `Astro.locals`
 
+<p><Since v="2.4.0" /></p>
+
 `Astro.locals` is an object containing any values from the [`context.locals`](#contextlocals) object from a middleware. Use this to access data returned by middleware in your `.astro` files.
 
 ```astro title="src/pages/Orders.astro"
@@ -610,6 +625,10 @@ const orders = Array.from(Astro.locals.orders.entries());
 
 ### `Astro.preferredLocale`
 
+<p><Since v="3.5.0" /></p>
+
+**Type:** `string | undefined`
+
 `Astro.preferredLocale` is a computed value that represents the preferred locale of the user. 
 
 It is computed by checking the configured locales in your `i18n.locales` array and locales supported by the users's browser via the header `Accept-Language`. This value is `undefined` if no such match exists.
@@ -618,6 +637,10 @@ This property is only available when building for SSR (server-side rendering) an
 
 ### `Astro.preferredLocaleList`
 
+<p><Since v="3.5.0" /></p>
+
+**Type:** `string[] | undefined`
+
 `Astro.preferredLocaleList` represents the array of all locales that are both requested by the browser and supported by your website. This produces a list of all compatible languages between your site and your visitor. 
 
 If none of the browser's requested languages are found in your locales array, then the value is `[]`: you do not support any of your visitor's preferred locales.
@@ -628,6 +651,10 @@ This property is only available when building for SSR (server-side rendering) an
 
 ### `Astro.currentLocale`
 
+<p><Since v="3.5.6" /></p>
+
+**Type:** `string | undefined`
+
 The locale computed from the current URL, using the syntax specified in your `locales` configuration. If the URL does not contain a `/[locale]/` prefix, then the value will default to `i18n.defaultLocale`.
 
 ## Endpoint Context
@@ -672,6 +699,8 @@ See also: [`params`](#params)
 
 ### `context.props`
 
+<p><Since v="1.5.0" /></p>
+
 `context.props` is an object containing any `props` passed from `getStaticPaths()`. Because `getStaticPaths()` is not used when building for SSR (server-side rendering), `context.props` is only available in static builds.
 
 ```ts title="src/pages/posts/[id].json.ts"
@@ -696,6 +725,8 @@ See also: [Data Passing with `props`](#data-passing-with-props)
 
 ### `context.request`
 
+**Type:** `Request`
+
 A standard [Request](https://developer.mozilla.org/en-US/docs/Web/API/Request) object. It can be used to get the `url`, `headers`, `method`, and even body of the request.
 
 ```ts
@@ -710,18 +741,28 @@ See also: [Astro.request](#astrorequest)
 
 ### `context.cookies`
 
+**Type:** `AstroCookies`
+
 `context.cookies` contains utilities for reading and manipulating cookies.
 
 See also: [Astro.cookies](#astrocookies)
 
 ### `context.url`
 
+<p><Since v="1.5.0" /></p>
+
+**Type:** `URL`
+
 A [URL](https://developer.mozilla.org/en-US/docs/Web/API/URL) object constructed from the current `context.request.url` URL string value.
 
 See also: [Astro.url](#astrourl)
 
 ### `context.clientAddress`
 
+<p><Since v="1.5.0" /></p>
+
+**Type:** `string`
+
 Specifies the [IP address](https://en.wikipedia.org/wiki/IP_address) of the request. This property is only available when building for SSR (server-side rendering) and should not be used for static sites.
 
 ```ts
@@ -737,12 +778,20 @@ See also: [Astro.clientAddress](#astroclientaddress)
 
 ### `context.site`
 
+<p><Since v="1.5.0" /></p>
+
+**Type:** `URL | undefined`
+
 `context.site` returns a `URL` made from `site` in your Astro config. If undefined, this will return a URL generated from `localhost`.
 
 See also: [Astro.site](#astrosite)
 
 ### `context.generator`
 
+<p><Since v="1.5.0" /></p>
+
+**Type:** `string`
+
 `context.generator` is a convenient way to indicate the version of Astro your project is running. It follows the format `"Astro v1.x.x"`.
 
 ```ts title="src/pages/site-info.json.ts"
@@ -758,6 +807,10 @@ See also: [Astro.generator](#astrogenerator)
 
 ### `context.redirect()`
 
+<p><Since v="1.5.0" /></p>
+
+**Type:** `(path: string, status?: number) => Response`
+
 `context.redirect()` returns a [Response](https://developer.mozilla.org/en-US/docs/Web/API/Response) object that allows you to redirect to another page. This function is only available when building for SSR (server-side rendering) and should not be used for static sites.
 
 ```ts
@@ -772,6 +825,8 @@ See also: [`Astro.redirect()`](#astroredirect)
 
 ### `context.locals`
 
+<p><Since v="2.4.0" /></p>
+
 `context.locals` is an object used to store and access arbitrary information during the lifecycle of a request.
 
 Middleware functions can read and write the values of `context.locals`: