chore: show toast message when update test run/case (#25)

frontend/messages/en.json

@@ -189,6 +189,7 @@
     "back_to_cases": "Back to test cases",
     "updating": "Updating...",
     "update": "Update",
+    "updated_test_case": "Updated test case",
     "basic": "Basic",
     "title": "Title",
     "please_enter_title": "Please enter title",
@@ -241,6 +242,7 @@
     "back_to_runs": "Back to test runs",
     "updating": "Updating...",
     "update": "Update",
+    "updated_test_run": "Updated test run",
     "progress": "Progress",
     "refresh": "Refresh",
     "id": "ID",

frontend/messages/ja.json

@@ -190,6 +190,7 @@
     "back_to_cases": "テストケース一覧に戻る",
     "updating": "更新中...",
     "update": "更新",
+    "updated_test_case": "テストケースを更新しました",
     "basic": "基本データ",
     "title": "タイトル",
     "please_enter_title": "タイトルを入力してください",
@@ -242,6 +243,7 @@
     "back_to_runs": "テストラン一覧に戻る",
     "updating": "更新中...",
     "update": "更新",
+    "updated_test_run": "テストランを更新しました",
     "progress": "進捗",
     "refresh": "再読み込み",
     "id": "ID",