feat #461: add operational status dashboard

src/main/java/com/cloudhandson/vpdbackoffice/web/OperationStatusController.java

@@ -0,0 +1,22 @@
+package com.cloudhandson.vpdbackoffice.web;
+
+import com.cloudhandson.vpdbackoffice.service.OperationStatusService;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+
+@Controller
+public class OperationStatusController {
+
+  private final OperationStatusService service;
+
+  public OperationStatusController(OperationStatusService service) {
+    this.service = service;
+  }
+
+  @GetMapping("/operation-status")
+  public String status(Model model) {
+    model.addAttribute("rows", service.findRows());
+    return "operation-status";
+  }
+}