feat: embed rendering

[zeucapua]

Describe the solution you'd like Bluesky has different possible embed types that needs to be rendered correctly.

• [x] Images
• [ ] Videos
• [x] Quote Post
• [x] Quote Post w Media
• [x] Custom Feed Embed
• [x] User List (Mod List, etc.)
• [x] Starter Pack
• [x] External Link
  • [x] Giphy/Tenor GIFs
  • [x] Youtube
  • [x] Twitch
  • [x] GitHub
  • [x] Other random pages

Additional context Here's the official Bluesky app's implementation: https://github.com/bluesky-social/social-app/blob/main/src/view/com/util/post-embeds/index.tsx#L43