feat(v2): add support for RTL direction (#4140)

* feat(v2): add support for RTL

* Move to i18n config

* Move direction to localeConfigs

* Create RTL styles for Docusaurus styles (via new hook)

* update infima to alpha 19

* fix minor type error

* Fix build

* Cleanup

* polish RTL support

* polish RTL support

* revert english rtl dir

* minor RTL fix

* minor doc updates

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

website/docs/api/docusaurus.config.js.md

@@ -96,15 +96,20 @@ module.exports = {
     localeConfigs: {
       en: {
         label: 'English',
+        direction: 'ltr',
       },
       fr: {
         label: 'Français',
+        direction: 'ltr',
       },
     },
   },
 };
 ```
 
+- `label`: the label to use for this locale
+- `direction`: `ltr` (default) or `rtl` (for [right-to-left languages](https://developer.mozilla.org/en-US/docs/Glossary/rtl) like Araric, Hebrew...)
+
 ### `noIndex`
 
 - Type: `boolean`