feat: tag filtering functionality for test cases (#324)

frontend/messages/en.json

@@ -238,7 +238,8 @@
     "clone": "Clone",
     "cases_moved": "Test cases moved",
     "cases_cloned": "Test cases cloned",
-    "tags": "Tags"
+    "tags": "Tags",
+    "select_tags": "Select tags"
   },
   "Case": {
     "back_to_cases": "Back to test cases",

frontend/messages/ja.json

@@ -239,7 +239,8 @@
     "clone": "クローン",
     "cases_moved": "テストケースを移動しました",
     "cases_cloned": "テストケースをクローンしました",
-    "tags": "タグ"
+    "tags": "タグ",
+    "select_tags": "タグを選択"
   },
   "Case": {
     "back_to_cases": "テストケース一覧に戻る",

frontend/messages/pt-BR.json

@@ -238,7 +238,8 @@
     "clone": "Clonar",
     "cases_moved": "Casos de teste movidos",
     "cases_cloned": "Casos de teste clonados",
-    "tags": "Tags"
+    "tags": "Tags",
+    "select_tags": "Selecionar tags"
   },
   "Case": {
     "back_to_cases": "Voltar para os casos de teste",