feat: move docs to github pages (#3296)

* feat(docs): setup nextra

* feat(docs): add pages

* docs: update introduction page

* docs: fix typos

* docs: fix links

* docs: update README

* docs: sync with master

* docs: remove old docs

* fix(ci/docs): fix typos

* fix(ci/docs): fix docs setup

* fix(docs): update next config

* chore(ci/docs): clean up

* chore(docs): add meta tags

* chore: apply review changes

* docs: move drm into api section

* docs: fix next config

* docs: fix links

* docs: add methods section

* chore: sync with main

* docs: add missing onAudio events

docs/pages/_meta.json

@@ -0,0 +1,21 @@
+{
+  "index": "Introduction",
+  "installation": "Installation",
+  "component": "API",
+  "other": "Other",
+  "separator_versions": {
+    "type": "separator",
+    "title": ""
+  },
+  "updating": "Updating",
+  "changelog": {
+    "title": "Changelog",
+    "newWindow": true,
+    "href": "https://github.com/react-native-video/react-native-video/blob/master/CHANGELOG.md"
+  },
+  "separator_community": {
+    "type": "separator",
+    "title": ""
+  },
+  "projects": "Useful projects"
+}