Added missing health check controller

module-server/src/main/kotlin/de/twomartens/timetable/support/controller/v1/HealthCheckController.kt

@@ -0,0 +1,19 @@
+package de.twomartens.timetable.support.controller.v1
+
+import de.twomartens.timetable.property.ServiceProperties
+import io.swagger.v3.oas.annotations.Hidden
+import org.springframework.web.bind.annotation.GetMapping
+import org.springframework.web.bind.annotation.RequestMapping
+import org.springframework.web.bind.annotation.RestController
+
+@RestController
+@RequestMapping(value = ["/timetable/v1"])
+class HealthCheckController(private val properties: ServiceProperties) {
+
+
+    @Hidden
+    @GetMapping("/healthCheck")
+    fun healthCheck(message: String): String {
+        return properties.greeting.format(message)
+    }
+}