Update DataProvider backend and API to v2.0.0

[remdui]

Summary

This PR introduces DataProvider v2.0.0 and delivers a major lifecycle, security, and platform-architecture upgrade.

Key Changes

• Added optional scoped lifecycle APIs for advanced ownership isolation:
• Refactored core ownership/lifecycle internals with typed identifiers (PluginId, OwnerScopeId, ConnectionIdentifier) and stronger reference tracking/cleanup.
• Hardened runtime lifecycle behavior:
  • post-shutdown API use now fails fast
  • clean re-enable/restart handling via shared PlatformDataProviderRuntime
  • Unified Bukkit and Velocity command behavior through DataProviderCommandService.
• Expanded admin commands:
  • /dataprovider help
  • /dataprovider status [summary|connections] [unhealthy] [plugin <name>] [type <databaseType>]
  • /dataprovider config
  • /dataprovider reload
• Replaced platform-specific logger interface with backend-agnostic logging.
• Refactored public provider contract into read-only handles.
• DatabaseProvider no longer exposes lifecycle methods
• Lifecycle now managed internally through ManagedDatabaseProvider
• Hardened and tuned all backend implementations (MySQL, MongoDB, Redis, Redis Messaging):
  • stricter config validation and bounds checks
  • stronger TLS enforcement
  • safer async execution via AsyncTaskSupport
  • improved pooling/queue controls and operational limits
• Added best-effort file permission hardening for config files/directories.
• Updated docs and examples, including a new scoped lifecycle guide: docs/SCOPED_LIFECYCLE.md.

Breaking Changes / Migration Notes

1. DatabaseProvider.connect() and DatabaseProvider.disconnect() are no longer part of the public API.
2. API discovery is now platform-native:

• Bukkit/Paper: resolve DataProviderAPI via ServicesManager.
• Velocity: resolve via plugin instance implementing DataProviderApiSupplier.

3. Insecure TLS config combinations now fail startup instead of being tolerated.
4. DataProviderAPI should be treated as runtime-scoped; reacquire it after reload/re-enable.

Testing

• Added new tests for scoped lifecycle API, async task support, caller resolution, shared command service, platform runtime lifecycle, and Velocity bootstrap/API supplier behavior.
• Expanded existing tests for registry/handler lifecycle, backend behavior, and platform command adapters.