feat: Implement UI for Agent Bots in settings and remove CSML support (#11276)

- Add agent bots management UI in settings with avatar upload
- Enable agent bot configuration for all inbox types
- Implement proper CRUD operations with webhook URL support
- Fix agent bots menu item visibility in settings sidebar
- Remove all CSML-related code and features
- Add migration to convert existing CSML bots to webhook bots
- Simplify agent bot model and services to focus on webhook bots
- Improve UI to differentiate between system bots and account bots

## Video 





https://github.com/user-attachments/assets/3f4edbb7-b758-468c-8dd6-a9537b983f7d

---------

Co-authored-by: iamsivin <iamsivin@gmail.com>
Co-authored-by: Sivin Varghese <64252451+iamsivin@users.noreply.github.com>
Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>
Co-authored-by: Pranav <pranav@chatwoot.com>

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

@@ -2,23 +2,13 @@
   "AGENT_BOTS": {
     "HEADER": "Bots",
     "LOADING_EDITOR": "Loading editor...",
-    "DESCRIPTION": "Agent Bots are like the most fabulous members of your team. They can handle the small stuff, so you can focus on the stuff that matters. Give them a try.You can manage your bots from this page or create new ones using the 'Configure new bot' button.",
+    "DESCRIPTION": "Agent Bots are like the most fabulous members of your team. They can handle the small stuff, so you can focus on the stuff that matters. Give them a try. You can manage your bots from this page or create new ones using the 'Add Bot' button.",
     "LEARN_MORE": "Learn about agent bots",
-    "CSML_BOT_EDITOR": {
-      "NAME": {
-        "LABEL": "Bot name",
-        "PLACEHOLDER": "Name your bot.",
-        "ERROR": "Bot name is required."
-      },
-      "DESCRIPTION": {
-        "LABEL": "Bot description",
-        "PLACEHOLDER": "What does this bot do?"
-      },
-      "BOT_CONFIG": {
-        "ERROR": "Please enter your CSML bot configuration above.",
-        "API_ERROR": "Your CSML configuration is invalid. Please fix it and try again."
-      },
-      "SUBMIT": "Validate and save"
+    "GLOBAL_BOT": "System bot",
+    "GLOBAL_BOT_BADGE": "System",
+    "AVATAR": {
+      "SUCCESS_DELETE": "Bot avatar deleted successfully",
+      "ERROR_DELETE": "Error deleting bot avatar, please try again"
     },
     "BOT_CONFIGURATION": {
       "TITLE": "Select an agent bot",
@@ -32,7 +22,7 @@
       "SELECT_PLACEHOLDER": "Select bot"
     },
     "ADD": {
-      "TITLE": "Configure new bot",
+      "TITLE": "Add Bot",
       "CANCEL_BUTTON_TEXT": "Cancel",
       "API": {
         "SUCCESS_MESSAGE": "Bot added successfully.",
@@ -40,16 +30,22 @@
       }
     },
     "LIST": {
-      "404": "No bots found. You can create a bot by clicking the 'Configure new bot' button ↗",
+      "404": "No bots found. You can create a bot by clicking the 'Add Bot' button.",
       "LOADING": "Fetching bots...",
-      "TYPE": "Bot type"
+      "TABLE_HEADER": {
+        "DETAILS": "Bot Details",
+        "URL": "Webhook URL"
+      }
     },
     "DELETE": {
       "BUTTON_TEXT": "Delete",
       "TITLE": "Delete bot",
-      "SUBMIT": "Delete",
-      "CANCEL_BUTTON_TEXT": "Cancel",
-      "DESCRIPTION": "Are you sure you want to delete this bot? This action is irreversible.",
+      "CONFIRM": {
+        "TITLE": "Confirm Deletion",
+        "MESSAGE": "Are you sure you want to delete {name}?",
+        "YES": "Yes, Delete",
+        "NO": "No, Keep"
+      },
       "API": {
         "SUCCESS_MESSAGE": "Bot deleted successfully.",
         "ERROR_MESSAGE": "Could not delete bot. Please try again."
@@ -57,17 +53,44 @@
     },
     "EDIT": {
       "BUTTON_TEXT": "Edit",
-      "LOADING": "Fetching bots...",
       "TITLE": "Edit bot",
-      "CANCEL_BUTTON_TEXT": "Cancel",
       "API": {
         "SUCCESS_MESSAGE": "Bot updated successfully.",
         "ERROR_MESSAGE": "Could not update bot. Please try again."
       }
     },
+    "FORM": {
+      "AVATAR": {
+        "LABEL": "Bot avatar"
+      },
+      "NAME": {
+        "LABEL": "Bot name",
+        "PLACEHOLDER": "Enter bot name",
+        "REQUIRED": "Bot name is required"
+      },
+      "DESCRIPTION": {
+        "LABEL": "Description",
+        "PLACEHOLDER": "What does this bot do?"
+      },
+      "WEBHOOK_URL": {
+        "LABEL": "Webhook URL",
+        "PLACEHOLDER": "https://example.com/webhook",
+        "REQUIRED": "Webhook URL is required"
+      },
+      "ERRORS": {
+        "NAME": "Bot name is required",
+        "URL": "Webhook URL is required",
+        "VALID_URL": "Please enter a valid URL starting with http:// or https://"
+      },
+      "CANCEL": "Cancel",
+      "CREATE": "Create Bot",
+      "UPDATE": "Update Bot"
+    },
+    "WEBHOOK": {
+      "DESCRIPTION": "Configure a webhook bot to integrate with your custom services. The bot will receive and process events from conversations and can respond to them."
+    },
     "TYPES": {
-      "WEBHOOK": "Webhook bot",
-      "CSML": "CSML bot"
+      "WEBHOOK": "Webhook bot"
     }
   }
 }