feat(masterdata): introduce Regulation domain with API, persistence, and metrics integration

- Added `RegulationRepository` and its `Exposed` implementation for persistence.
- Implemented REST endpoints for regulations (`/rules`) in `RegulationController`, including support for tournament classes, license matrix, guidelines, fees, and configuration retrieval.
- Integrated OpenAPI documentation for `/rules` endpoints with Swagger UI in `masterdataApiModule`.
- Enabled Micrometer-based metrics for Prometheus in the API layer.
- Updated Gradle dependencies to include OpenAPI, Swagger, and Micrometer libraries.
- Registered `RegulationRepository` and `RegulationController` in `MasterdataConfiguration`.
- Improved database access patterns and reduced repetitive validation logic across domain services.
- Added unit and application tests for `RegulationController` to verify API behavior and repository interactions.
- Updated the service's `ROADMAP.md` to mark API v1 endpoints and observability as complete.

Signed-off-by: Stefan Mogeritsch <stefan.mo.co@gmail.com>

backend/services/masterdata/masterdata-api/build.gradle.kts

@@ -24,6 +24,10 @@ dependencies {
     implementation(libs.ktor.server.statusPages)
     implementation(libs.ktor.server.auth)
     implementation(libs.ktor.server.authJwt)
+  implementation(libs.ktor.server.openapi)
+  implementation(libs.ktor.server.swagger)
+  implementation(libs.ktor.server.metrics.micrometer)
+  implementation(libs.micrometer.prometheus)
 
     // Testing
     testImplementation(projects.platform.platformTesting)