Add Sticker type

pyrogram/client/types/sticker.py

@@ -0,0 +1,21 @@
+from . import PhotoSize, MaskPosition
+
+
+class Sticker:
+    def __init__(self,
+                 file_id: str,
+                 width: int,
+                 height: int,
+                 thumb: PhotoSize = None,
+                 emoji: str = None,
+                 set_name: str = None,
+                 mask_position: MaskPosition = None,
+                 file_size: int = None):
+        self.file_id = file_id
+        self.width = width
+        self.height = height
+        self.thumb = thumb
+        self.emoji = emoji
+        self.set_name = set_name
+        self.mask_position = mask_position
+        self.file_size = file_size