move gotd fork into repo. (#111)

- update to latest telegram layer
- remove some references to fields in tg.Entities that don't exist in
the schema
- originally added here:
https://github.com/beeper/td/commit/820929062a2ba0104397bc01235ab58a9cff780e
  - referenced here
-
https://github.com/mautrix/telegramgo/commit/124f0967ed195b5a380c9bd02e170ada9710dde3
-
https://github.com/mautrix/telegramgo/commit/4205047aab2e0639217148b5d125bfaab668bd8e

pkg/gotd/telegram/peers/members/status.go

@@ -0,0 +1,19 @@
+package members
+
+//go:generate go run -modfile=../../../_tools/go.mod golang.org/x/tools/cmd/stringer -type=Status
+
+// Status defines participant status.
+type Status int
+
+const (
+	// Plain is status for plain participant.
+	Plain Status = iota
+	// Creator is status for chat/channel creator.
+	Creator
+	// Admin is status for chat/channel admin.
+	Admin
+	// Banned is status for banned user.
+	Banned
+	// Left is status for user that left chat/channel.
+	Left
+)