feat: Add an option to delete campaigns (#2402)

Co-authored-by: Pranav Raj S <pranav@chatwoot.com>

app/javascript/dashboard/i18n/locale/en/campaign.json

@@ -42,6 +42,19 @@
         "ERROR_MESSAGE": "There was an error. Please try again."
       }
     },
+    "DELETE": {
+      "BUTTON_TEXT": "Delete",
+      "CONFIRM": {
+        "TITLE": "Confirm Deletion",
+        "MESSAGE": "Are you sure to delete?",
+        "YES": "Yes, Delete ",
+        "NO": "No, Keep "
+      },
+      "API": {
+        "SUCCESS_MESSAGE": "Campaign deleted successfully",
+        "ERROR_MESSAGE": "Could not delete the campaign. Please try again later."
+      }
+    },
     "EDIT": {
       "TITLE": "Edit campaign",
       "UPDATE_BUTTON_TEXT": "Update",