reworking of links extension

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/User.kt

@@ -10,9 +10,7 @@ import kotlinx.serialization.encoding.Encoder
 import kotlinx.serialization.json.*
 
 @Serializable(UserSerializer::class)
-sealed class User : PrivateChat {
-    abstract override val id: UserId
-}
+sealed class User : PrivateChat
 
 @Serializable
 data class CommonUser(

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/PrivateChat.kt

@@ -1,10 +1,13 @@
 package dev.inmo.tgbotapi.types.chat.abstracts
 
+import dev.inmo.tgbotapi.types.ChatId
+import dev.inmo.tgbotapi.types.UserId
 import dev.inmo.tgbotapi.types.chat.PreviewChatSerializer
 import kotlinx.serialization.Serializable
 
 @Serializable(PreviewChatSerializer::class)
 interface PrivateChat : Chat, UsernameChat {
+    override val id: UserId
     val firstName: String
     val lastName: String
 }