refactor: Migrate from monolithic to modular architecture

- Restructure project into domain-specific modules (core, masterdata, members, horses, events, infrastructure)
- Create shared client components in common-ui module
- Implement CI/CD workflows with GitHub Actions
- Consolidate documentation in docs directory
- Remove deprecated modules and documentation files
- Add cleanup and migration scripts for transition
- Update README with new project structure and setup instructions

masterdata/masterdata-infrastructure/build.gradle.kts

@@ -0,0 +1,22 @@
+plugins {
+    kotlin("jvm")
+    kotlin("plugin.spring")
+    kotlin("plugin.jpa") version "2.1.20"
+}
+
+dependencies {
+    implementation(projects.platform.platformDependencies)
+
+    implementation(projects.masterdata.masterdataDomain)
+    implementation(projects.masterdata.masterdataApplication)
+    implementation(projects.core.coreDomain)
+    implementation(projects.core.coreUtils)
+    implementation(projects.infrastructure.cache.cacheApi)
+    implementation(projects.infrastructure.eventStore.eventStoreApi)
+    implementation(projects.infrastructure.messaging.messagingClient)
+
+    implementation("org.springframework.boot:spring-boot-starter-data-jpa")
+    implementation("org.postgresql:postgresql")
+
+    testImplementation(projects.platform.platformTesting)
+}