docs: change configurations to make v2 the main docs (#9729)

* docs: change configurations to make v2 the main docs

* move api routes to top level

* remove api prefix

* update opengraph images

* show v1 link

* add redirect to v1

www/apps/api-reference/.env.sample

@@ -4,7 +4,7 @@ NEXT_PUBLIC_DOCS_ALGOLIA_INDEX_NAME=
 NEXT_PUBLIC_API_ALGOLIA_INDEX_NAME=
 NEXT_PUBLIC_ALGOLIA_API_KEY=
 NEXT_PUBLIC_ALGOLIA_APP_ID=
-NEXT_PUBLIC_ENV=
+NEXT_PUBLIC_ENV=development # change to production when running npm start
 NEXT_PUBLIC_BASE_URL=
 NEXT_PUBLIC_DOCS_URL=
 NEXT_PUBLIC_UI_URL=