add whatsapp client proxy url support configuration

.env.example

@@ -31,6 +31,8 @@ AUTH_JWT_EXPIRED_HOUR=0
 WHATSAPP_DATASTORE_TYPE=sqlite
 WHATSAPP_DATASTORE_URI=file:dbs/WhatsApp.db?_foreign_keys=on
 
+WHATSAPP_CLIENT_PROXY_URL=""
+
 WHATSAPP_USER_AGENT_NAME="Go WhatsApp Multi-Device REST"
 WHATSAPP_USER_AGENT_TYPE="chrome"
 

pkg/whatsapp/whatsapp.go

@@ -98,6 +98,11 @@ func WhatsAppInitClient(device *store.Device, jid string) {
 		// And Save it to The Map
 		WhatsAppClient[jid] = whatsmeow.NewClient(device, nil)
 
+		// Set WhatsApp Client Proxy Address if Proxy URL is Provided
+		if len(WhatsAppClientProxyURL) > 0 {
+			WhatsAppClient[jid].SetProxyAddress(WhatsAppClientProxyURL)
+		}
+
 		// Set WhatsApp Client Auto Reconnect
 		WhatsAppClient[jid].EnableAutoReconnect = true