feat: Implement Search with MeiliSearch

[Dan6erbond]

• Implement MeiliSearch as FTS engine and hooks in PocketBase to sync posts with MeiliSearch.
• Implement commands to manage MeiliSearch/index:
  • search key: Get MeiliSearch read-only API key.
  • search index sync: Sync all posts with MeiliSearch index.
  • search index clear: Clear posts index.
• Add frontend support for search.

Configuration

Users must provide the MEILISEARCH_HOST and MEILISEARCH_ADMIN_API_KEY environment variables in the frontend and backend to enable search. This will display a search bar on the homepage, as well as enable the /search route and register all related hooks and commands.

[cocogitto-bot[bot]]

:heavy_check_mark: 28878b8...3944c2c - Conventional commits check succeeded.