chore: remove deprecated horses, clubs, officials, and persons services

- Deleted obsolete modules related to horses, clubs, officials, and persons services, including their configurations, build files, and database provisioning scripts.
- Cleaned up associated references in the project structure (e.g., `settings.gradle.kts`).
- Removed unused database tables and Spring beans related to these domains.

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

core/core-utils/build.gradle.kts

@@ -34,9 +34,9 @@ kotlin {
     }
     jvmMain {
       dependencies {
-        // Removed Exposed dependencies to make this module KMP compatible
-        // implementation(libs.exposed.core)
-        // implementation(libs.exposed.jdbc)
+        implementation(libs.exposed.core)
+        implementation(libs.exposed.jdbc)
+        implementation(libs.exposed.kotlin.datetime)
       }
     }
   }

core/core-utils/src/jvmMain/kotlin/at/mocode/core/utils/database/DatabaseFactory.kt

@@ -0,0 +1,31 @@
+package at.mocode.core.utils.database
+
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+import org.jetbrains.exposed.v1.core.Transaction
+import org.jetbrains.exposed.v1.jdbc.transactions.transaction
+import org.jetbrains.exposed.v1.jdbc.transactions.experimental.newSuspendedTransaction
+
+/**
+ * Utility for database operations using Exposed.
+ */
+object DatabaseFactory {
+
+  /**
+   * Executes a database query in a suspended transaction.
+   */
+  suspend fun <T> dbQuery(block: suspend Transaction.() -> T): T =
+    withContext(Dispatchers.IO) {
+      newSuspendedTransaction {
+        block()
+      }
+    }
+
+  /**
+   * Executes a database query in a blocking transaction.
+   */
+  fun <T> transaction(block: Transaction.() -> T): T =
+    org.jetbrains.exposed.v1.jdbc.transactions.transaction {
+      block()
+    }
+}