add setStickerMaskPosition

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/requests/stickers/SetStickerMaskPosition.kt

@@ -0,0 +1,26 @@
+package dev.inmo.tgbotapi.requests.stickers
+
+import dev.inmo.tgbotapi.requests.abstracts.*
+import dev.inmo.tgbotapi.requests.common.CommonMultipartFileRequest
+import dev.inmo.tgbotapi.requests.stickers.abstracts.OwnerStickerSetAction
+import dev.inmo.tgbotapi.requests.stickers.abstracts.StickerAction
+import dev.inmo.tgbotapi.requests.stickers.abstracts.StickerSetAction
+import dev.inmo.tgbotapi.types.*
+import dev.inmo.tgbotapi.types.stickers.MaskPosition
+import kotlinx.serialization.*
+import kotlinx.serialization.builtins.serializer
+
+@Serializable
+data class SetStickerMaskPosition (
+    @SerialName(stickerField)
+    override val sticker: FileId,
+    @SerialName(maskPositionField)
+    val maskPosition: MaskPosition
+) : StickerAction<Boolean> {
+    override val resultDeserializer: DeserializationStrategy<Boolean>
+        get() = Boolean.serializer()
+    override val requestSerializer: SerializationStrategy<*>
+        get() = serializer()
+
+    override fun method(): String = "setStickerMaskPosition"
+}