Add status endpoint placeholder

src/main/groovy/io/kamax/mxisd/controller/v1/StatusController.java

@@ -0,0 +1,19 @@
+package io.kamax.mxisd.controller.v1;
+
+import org.springframework.http.MediaType;
+import org.springframework.web.bind.annotation.CrossOrigin;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@CrossOrigin
+@RequestMapping(produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
+public class StatusController {
+
+    @RequestMapping(value = "/_matrix/identity/status")
+    public String getStatus() {
+        // TODO link to backend
+        return "{\"status\":{\"health\":\"OK\"}}";
+    }
+
+}