Add BeeCount to Finance

[TNT-Likely]

Summary

Adds BeeCount to the Finance section.

BeeCount is a privacy-first cross-platform personal expense tracker (Android, iOS, Web), offline-first, with multi-cloud sync — self-hostable BeeCount Cloud, iCloud, Supabase, WebDAV, or S3. ~1.5k★, 200+ forks, active development.

• Source: https://github.com/TNT-Likely/BeeCount
• App Store: https://apps.apple.com/app/id6754611670
• Google Play: https://play.google.com/store/apps/details?id=com.tntlikely.beecount

Compliance with CONTRIBUTING.md

• Searched previous suggestions for duplicates
• Individual PR for this single suggestion
• Format: [Name](repo) - description by [Author](profile).
• Description doesn't mention Flutter (implied) or iOS/Android/Swift/Java
• Description ends with a period
• Entry positioned as the last item in the Finance category
• Project meets eligibility (active, English README, English code comments, sufficient stars, working app on both stores)

Affiliation disclosure

I'm the author of BeeCount (@TNT-Likely).

License note (transparency)

BeeCount uses a custom commercial source-available license (free for personal/non-commercial use; commercial use requires a paid license). It's not OSI-approved. If that excludes it from this list, no problem — happy to close the PR. Most of this list's existing entries are MIT/Apache, so I want to flag this upfront.