Merge pull request #873 from bpavuk/bpavuk.reply-extension-paid-media

Implemented paid media reply extension

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/message/payments/PaidMediaToTelegramPaidMedia.kt

@@ -0,0 +1,13 @@
+package dev.inmo.tgbotapi.types.message.payments
+
+import dev.inmo.tgbotapi.types.media.*
+
+fun PaidMedia.toTelegramPaidMediaOrNull(): TelegramPaidMedia? = when (this) {
+    is PaidMedia.Photo -> toTelegramMediaPhoto()
+    is PaidMedia.Video -> toTelegramPaidMediaVideo()
+    is PaidMedia.Preview, is PaidMedia.Unknown -> null
+}
+
+fun PaidMedia.Video.toTelegramPaidMediaVideo(): TelegramPaidMediaVideo = this.video.toTelegramPaidMediaVideo()
+
+fun PaidMedia.Photo.toTelegramMediaPhoto(): TelegramPaidMediaPhoto = this.photo.biggest.toTelegramPaidMediaPhoto()