feat: add config.leader and document it

[craigmac]

Config.leader was missing, I added it, and used the preexisting
KeyNoAction and documented both leader and the fields 'keys' and mods'

[DrKJeff16]

Is it possible you could enclose timeout_milliseconds (and any other explicit identifier) ?

e.g. timeout_milliseconds

See Annotation Formatting in LuaLS' anotations wiki. It supports Markdown

---

A small example of how it should look when hovering:

[craigmac]

I typically do, I knew I was going to miss some!

[DrKJeff16]

We all miss something eventually, don't worry

[DrKJeff16]

Could you delete the inline comment for this (and any other) ---@field key? I'm trying to get rid of these for better manipulation.

For instance:

---@field mods? string Optional modifiers keys.
--BECOMES:
-- Optional modifiers keys
---@field mods? string

If you want to make that specific description stand out, I recommend you used tree - chars:

-- You can also combine modifiers using the `|` symbol, like `"CMD|CTRL"`.
-- ---
-- Optional modifiers keys
---@field mods? string

See #42 for my rationale, I'd love to hear yours

[DrKJeff16]

@craigmac I've edited the suggestion, missed the description on top of the ---@field annotation 💀

[DrKJeff16]

You can reject it, but I'd suggest:

---@class LeaderKey: KeyNoAction
-- Maximum time to wait for the next key, in milliseconds.
--
-- The default is `1000`
---@field timeout_milliseconds? integer
--...

See #42 for my rationale, I'd love to hear yours