Add chat member tools (#1527)

* feat: add ChatMemberAdapter

* chore: apply formatter

* docs: added changelog

* docs: rm redundant import

* feat: add pre-defined groups

aiogram/utils/chat_member.py

@@ -0,0 +1,37 @@
+from typing import Tuple, Type, Union
+
+from pydantic import Field, TypeAdapter
+from typing_extensions import Annotated
+
+from aiogram.types import (
+    ChatMember,
+    ChatMemberAdministrator,
+    ChatMemberBanned,
+    ChatMemberLeft,
+    ChatMemberMember,
+    ChatMemberOwner,
+    ChatMemberRestricted,
+)
+
+ChatMemberUnion = Union[
+    ChatMemberOwner,
+    ChatMemberAdministrator,
+    ChatMemberMember,
+    ChatMemberRestricted,
+    ChatMemberLeft,
+    ChatMemberBanned,
+]
+
+ChatMemberCollection = Tuple[Type[ChatMember], ...]
+
+ChatMemberAdapter = TypeAdapter(
+    Annotated[
+        ChatMemberUnion,
+        Field(discriminator="status"),
+    ]
+)
+
+ADMINS: ChatMemberCollection = (ChatMemberOwner, ChatMemberAdministrator)
+USERS: ChatMemberCollection = (ChatMemberMember, ChatMemberRestricted)
+MEMBERS: ChatMemberCollection = ADMINS + USERS
+NOT_MEMBERS: ChatMemberCollection = (ChatMemberLeft, ChatMemberBanned)