feat: add pages' create time and last edited time in the frontmatter

Author: alvis

source/client.ts

@@ -189,6 +189,8 @@ export class Notion {
         {
           id: page.id,
           title,
+          createdTime: page.created_time,
+          lastEditedTime: page.last_edited_time,
         },
         { forceQuotes: true },
       ).trim(),

spec/client.spec.ts

@@ -55,6 +55,8 @@ describe('cl:Notion', () => {
 ---
 id: 'page'
 title: 'Title'
+createdTime: '2020-01-01T00:00:00Z'
+lastEditedTime: '2020-01-01T00:00:00Z'
 ---
 block 0 for block page
 

spec/gatsby-node.spec.ts

@@ -161,7 +161,7 @@ describe('fn:sourceNodes', () => {
         id: 'page',
         last_edited_time: '2020-01-01T00:00:00Z',
         markdown:
-          "---\nid: 'page'\ntitle: 'Title'\n---\nblock 0 for block page\n\nblock 0 for block page-block0\n",
+          "---\nid: 'page'\ntitle: 'Title'\ncreatedTime: '2020-01-01T00:00:00Z'\nlastEditedTime: '2020-01-01T00:00:00Z'\n---\nblock 0 for block page\n\nblock 0 for block page-block0\n",
         object: 'page',
         parent: { database_id: 'database-page', type: 'database_id' },
         properties: {