feat: Better Services

[nlogozzo]

This PR contains the following features and fixes:

• Remove .NET 9 support
• Removes the JsonFileService
  • See below
• Adds the DatabaseService
  • All applications will get an encrypted app.db to store all configuration and data needed.
  • The KeyringService will now use this app.db to create and manage the credentials table
    • Old application .ring2 credential databases will be automatically read and migrated to app.db by the KeyringService
  • All applications should migrate away from JsonFileService and .json file storage to storing and working with all data in the DatabaseService
• Adds the ConfigurationService
  • Allows getting and setting primitive data and serialzied json objects
  • Uses caching for already gathered and unmodified data
  • Uses transactions for fast database operations
    • Applications should periodically call Save() to commit the transactions
• Adds the DependencyExecutableService
  • Provides generic implementations for managing executables that applications depend on and provides a clear path for updating them and running processes