Add "My collections" page (#37552)

app/javascript/mastodon/locales/en.json

@@ -194,9 +194,16 @@
   "closed_registrations_modal.find_another_server": "Find another server",
   "closed_registrations_modal.preamble": "Mastodon is decentralized, so no matter where you create your account, you will be able to follow and interact with anyone on this server. You can even self-host it!",
   "closed_registrations_modal.title": "Signing up on Mastodon",
+  "collections.create_a_collection_hint": "Create a collection to recommend or share your favourite accounts with others.",
+  "collections.create_collection": "Create collection",
+  "collections.delete_collection": "Delete collection",
+  "collections.error_loading_collections": "There was an error when trying to load your collections.",
+  "collections.no_collections_yet": "No collections yet.",
+  "collections.view_collection": "View collection",
   "column.about": "About",
   "column.blocks": "Blocked users",
   "column.bookmarks": "Bookmarks",
+  "column.collections": "My collections",
   "column.community": "Local timeline",
   "column.create_list": "Create list",
   "column.direct": "Private mentions",