feat: add user token secret management for channels

- Implemented user token secret generation and retrieval in channel service.
- Added ResetUserTokenSecret method to reset the user token secret for channels.
- Updated channel configuration parsing to include user token secret.
- Enhanced WebSocket service to utilize user token secret for external info retrieval.
- Modified dashboard channel edit component to support user token secret display and reset functionality.
- Introduced API endpoint for resetting user token secret.
- Updated IM and SDK configurations to include user token.
- Added tests for user token verification logic.

internal/pkg/dto/request/channel_request.go

@@ -22,3 +22,7 @@ type UpdateChannelStatusRequest struct {
 type DeleteChannelRequest struct {
 	ID int64 `json:"id"`
 }
+
+type ResetChannelUserTokenSecretRequest struct {
+	ID int64 `json:"id"`
+}