extend user model

Author: Andrey Sundukov

kotlin-telegram-framework/src/main/kotlin/io/cutebot/telegram/bot/model/User.kt

@@ -5,6 +5,10 @@ import io.cutebot.telegram.client.model.TgUser
 class User private constructor(tgUser: TgUser) {
 
     val id = tgUser.id
+    val firstName = tgUser.firstName
+    val lastName = tgUser.lastName
+    val userName = tgUser.userName
+    val languageCode = tgUser.languageCode
 
     companion object {
         fun create(tgUser: TgUser?): User? {