[Library Sync][Arduino] Hashtable -> braydenanderson2014/ArduinoHashtable

<!-- library-sync-request --> <!-- auto-library-sync-request --> <!-- sync-template-variant: arduino --> <!-- generated-at: 2026-08-07T19:51:59.863Z --> ### Library Hashtable ### Pull request title Sync Hashtable from monorepo (auto) ### Target branch override _No response_ ### Sync summary Auto-generated sync request based on detected monorepo changes. - Source path: lib/Hashtable - Target repository: braydenanderson2014/ArduinoHashtable - Template variant: arduino - Detected from: push (refs/heads/main) - Compare: https://github.com/braydenanderson2014/C-Arduino-Libraries/compare/b73d1529bdc58a8faa86d92c54ee96ffbc9ea0c1...7181e3f7f031b08b53e5e47ccba0fac55b37617a - Commit highlights: - Back-sync Hashtable from remote PR #9 (b2ab30e) ### Pull request notes Auto-created by workflow: auto-library-sync-issues.yml Review generated summary and edit before processing if needed. ### Confirmations - [x] I verified the library folder in this monorepo is ready to sync. - [x] I understand this workflow only syncs configured library-managed paths, not the full repository.