Add CI/CD with GitHub Actions and migrate to Deployment

- Migrate from DaemonSet to Deployment for better efficiency
- Add GitHub Actions for automatic build and deploy
- Add Blue-Green deployment strategy with health checks
- Add scripts for development and production workflows
- Update documentation with CI/CD flow

k8s/daemonset.yaml

@@ -7,6 +7,10 @@ metadata:
     app.kubernetes.io/name: resource-governance
     app.kubernetes.io/component: governance
 spec:
+  updateStrategy:
+    type: RollingUpdate
+    rollingUpdate:
+      maxUnavailable: 1
   selector:
     matchLabels:
       app.kubernetes.io/name: resource-governance
@@ -32,6 +36,22 @@ spec:
         - containerPort: 8080
           name: http
           protocol: TCP
+        livenessProbe:
+          httpGet:
+            path: /api/v1/health
+            port: 8080
+          initialDelaySeconds: 30
+          periodSeconds: 10
+          timeoutSeconds: 5
+          failureThreshold: 3
+        readinessProbe:
+          httpGet:
+            path: /api/v1/health
+            port: 8080
+          initialDelaySeconds: 5
+          periodSeconds: 5
+          timeoutSeconds: 3
+          failureThreshold: 3
         securityContext:
           allowPrivilegeEscalation: false
           capabilities: