Implement "Reset to Initial/New Config" API and Command Processing Mechanism for Provider

Title: #547 (closed) Implement "Reset to Initial/New Config" API and Command Processing Mechanism for Provider

Description: In addition to implementing the reset configuration functionality for the Provider service, this task includes a mechanism for processing commands from the Transformer service using an Ignite-backed command queue. The Provider will persist its lastProcessedId to ensure continuity after restarts and will process only the latest command of each type from a batch of unprocessed commands.

Requirements:

1. Reset Configuration API:

   • Create resetToConfig method for the Provider service.
   • Provide API endpoint: POST /admin/providerConfig/reset.
   • Default behavior: reset to the initial configuration file used on the first start.
   • Optional: allow the admin to provide a new configuration file that will replace the initial one.
   • Validate the configuration before applying and ensure proper error handling.
   • Log success and failure of the reset operation.
   • Update Swagger to reflect this endpoint for the Provider service.

2. Command Processing Mechanism:

   • Implement a command polling mechanism to read and process commands from the ProviderCommandCache.
   • Use Ignite cache to fetch new commands (e.g., LAYER_DEFINITION_CHANGED, PROVIDER_CONFIG_CHANGED).
   • Group unprocessed commands by type and process only the latest one of each type.
   • Persist the lastProcessedId in the directory with other Provider configuration files (koop-config.json directory).
   • Retrieve lastProcessedId from the file and update it after processing each command.

3. Logging & Error Handling:

   • Add proper logging for command processing and reset operations (both success and failure).
   • Handle errors for invalid configurations and command processing failures.

4. Unit & Integration Tests:

   • Write tests to verify reset behavior for both default and provided config file scenarios.
   • Write tests to verify correct command processing and persistence of lastProcessedId.

Acceptance Criteria:

• The Provider service supports "reset to initial/new config" functionality.
• The POST /admin/providerConfig/reset endpoint is documented in Swagger.
• The Provider successfully polls, processes commands, and persists lastProcessedId.
• Tests verify both reset behavior and command processing.