feat: doc tags (same as blog tags) (#3646)

* [v2] tags to doc, same as tags to blog - [IN PROGRESS]

- Addition of plugin-content-docs

- Addition of DocTagsListPage in `docusaurus-theme-classic`

! Error exists for this commit towards the theme aspect and help required.

Commit towards #3434

* docs: make tags list page work

* temp: disable onBrokenLinks

* theme bootstrap: create DocTagsListPage

* DocTagsPage added and functionality too

- individual doc tag page added to show docs for that specific tag

* Added all Docs Tags Link

* add some shared tag utils

* move tag tests to _dogfooding

* fix type

* fix some tests

* fix blog test

* refactor blog post tags handling

* better yaml tag examples

* better dogfood md files

* refactor and factorize theme tag components

* finish DocTagDocListPage

* Extract DocItemFooter + add inline tag list

* minor fix

* better typings

* fix versions.test.ts tests

* add tests for doc tags

* fix tests

* test toTagDocListProp

* move shared theme code to tagUtils

* Add new theme translation keys

* move common theme code to tagUtils + add tests

* update-code-translations should handle theme-common

* update french translation

* revert add translation

* fix pluralization problem in theme.docs.tagDocListPageTitle

* add theme component configuration options

* add more tags tests

* add documentation for docs tagging

Co-authored-by: slorber <lorber.sebastien@gmail.com>

packages/docusaurus-theme-common/src/utils/ThemeClassNames.ts

@@ -11,8 +11,12 @@ export const ThemeClassNames = {
     blogListPage: 'blog-list-page',
     blogPostPage: 'blog-post-page',
     blogTagsListPage: 'blog-tags-list-page',
-    blogTagsPostPage: 'blog-tags-post-page',
-    docPage: 'doc-page',
+    blogTagPostListPage: 'blog-tags-post-list-page',
+
+    docsDocPage: 'docs-doc-page',
+    docsTagsListPage: 'docs-tags-list-page', // List of tags
+    docsTagDocListPage: 'docs-tags-doc-list-page', // Docs for a tag
+
     mdxPage: 'mdx-page',
   },
   wrapper: {