added common translation files

packages/app/public/static/locales/en_US/commons.json

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+{
+  "meta": {
+    "display_name": "English"
+  },
+  "toaster": {
+    "create_succeeded": "Succeeded to create {{target}}",
+    "create_failed": "Failed to create {{target}}",
+    "update_successed": "Succeeded to update {{target}}",
+    "update_failed": "Failed to update {{target}}"
+  }
+}

packages/app/public/static/locales/ja_JP/commons.json

@@ -0,0 +1,11 @@
+{
+  "meta": {
+    "display_name": "日本語"
+  },
+  "toaster": {
+    "create_succeeded": "新しい{{target}}が作成されました",
+    "create_failed": "{{target}}の作成に失敗しました",
+    "update_successed": "{{target}}を更新しました",
+    "update_failed": "{{target}}の更新に失敗しました"
+  }
+}

packages/app/public/static/locales/zh_CN/commons.json

@@ -0,0 +1,11 @@
+{
+  "meta": {
+    "display_name": "简体中文"
+  },
+  "toaster": {
+    "create_succeeded": "Succeeded to create {{target}}",
+    "create_failed": "Failed to create {{target}}",
+    "update_successed": "Succeeded to update {{target}}",
+    "update_failed": "Failed to update {{target}}"
+  }
+}