Polished up the Astro migration with a bunch of fixes and new features.

Added RSS feeds for both the blog and devlog sections. Created several new pages that were missing from the migration: the bookmarklet builder, bubble bobble, slippery boxes, spacetraders, talks, and privacy policy pages.

Fixed up the share buttons component and improved the link card styling. Updated the layout to handle social images better. Various content fixes across devlogs, links, notes, and posts - mostly correcting formatting issues that came through from the Jekyll conversion.

Expanded the migration verification script to catch more edge cases and added a verify ignore list for known acceptable differences.