FEAT(config): add dev environment configuration

- Add development environment settings
- Configure dev-specific resources

deploy/k8s/overlays/dev/kustomization.yaml

@@ -0,0 +1,20 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+namespace: todo-dev
+
+resources:
+  - ../../base
+  - resourcequota.yaml
+  - namespace.yaml
+
+commonLabels:
+  environment: development
+
+# 이미지 태그 설정 (dev 브랜치 사용 시)
+images:
+  - name: ghcr.io/mayne0213/todo
+    newTag: main-sha-69b3fc9deb45c82ac19120458829d940f1f7a498
+
+patchesStrategicMerge:
+  - deployment-patch.yaml