add health endpoint

src/main/java/xyz/mcutils/backend/controller/HealthController.java

@@ -0,0 +1,22 @@
+package xyz.mcutils.backend.controller;
+
+import org.springframework.http.ResponseEntity;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import xyz.mcutils.backend.config.Config;
+
+import java.util.Map;
+
+@Controller
+@RequestMapping(value = "/")
+public class HealthController {
+
+    @GetMapping(value = "/health")
+    public ResponseEntity<?> home() {
+        return ResponseEntity.ok(Map.of(
+                "status", "OK"
+        ));
+    }
+}