chore: 🔧 clean up code structure and remove unused files

* Refactored several modules for better readability
* Removed deprecated functions and variables
* Improved overall project organization

pkg/config/config.go

@@ -52,6 +52,7 @@ type WhatsAppConfig struct {
 	PhoneNumber string             `json:"phone_number"`
 	SessionPath string             `json:"session_path,omitempty"`
 	ShowQR      bool               `json:"show_qr,omitempty"`
+	Disabled    bool               `json:"disabled,omitempty"` // If true, account won't be connected
 	BusinessAPI *BusinessAPIConfig `json:"business_api,omitempty"`
 }