TF-1983 Add CreateFilters button in empty thread view widget

(cherry picked from commit 5eed73198c868448cfbc3c93600176aa15bf62f4)

lib/l10n/intl_messages.arb

@@ -1,5 +1,5 @@
 {
-  "@@last_modified": "2023-08-08T20:09:51.612589",
+  "@@last_modified": "2023-08-09T18:38:10.703509",
   "initializing_data": "Initializing data...",
   "@initializing_data": {
     "type": "text",
@@ -3133,5 +3133,33 @@
     "type": "text",
     "placeholders_order": [],
     "placeholders": {}
+  },
+  "createFolderSuccessfullyMessage": "You successfully created {folderName} folder",
+  "@createFolderSuccessfullyMessage": {
+    "type": "text",
+    "placeholders_order": [
+      "folderName"
+    ],
+    "placeholders": {
+      "folderName": {}
+    }
+  },
+  "folderCreatedTitle": "Your folder is just created",
+  "@folderCreatedTitle": {
+    "type": "text",
+    "placeholders_order": [],
+    "placeholders": {}
+  },
+  "folderCreatedMessage": "To begin using this mailbox, you should add some rules to organize all of your mail in your own way.",
+  "@folderCreatedMessage": {
+    "type": "text",
+    "placeholders_order": [],
+    "placeholders": {}
+  },
+  "createFilters": "Create filters",
+  "@createFilters": {
+    "type": "text",
+    "placeholders_order": [],
+    "placeholders": {}
   }
 }