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/members.go

@@ -0,0 +1,55 @@
+// Package members defines interfaces for working with chat/channel members.
+package members
+
+import (
+	"context"
+	"time"
+
+	"go.mau.fi/mautrix-telegram/pkg/gotd/telegram/peers"
+	"go.mau.fi/mautrix-telegram/pkg/gotd/tg"
+)
+
+var _ = []Member{
+	ChatMember{},
+	ChannelMember{},
+}
+
+// Member represents chat/channel member.
+type Member interface {
+	// Status returns member Status.
+	Status() Status
+	// JoinDate returns member join date, if it is available.
+	JoinDate() (time.Time, bool)
+	// InvitedBy returns user that invited this member.
+	InvitedBy() (peers.User, bool)
+	// User returns member User object.
+	User() peers.User
+	// Kick kicks this member.
+	//
+	// If revokeHistory is set, will delete all messages from this member.
+	Kick(ctx context.Context, revokeHistory bool) error
+}
+
+// Callback is type for member iterator callback.
+type Callback = func(p Member) error
+
+var _ = []Members{
+	&ChatMembers{},
+	&ChannelMembers{},
+}
+
+// Members represents chat/channel members.
+type Members interface {
+	// ForEach calls cb for every member of chat/channel.
+	ForEach(ctx context.Context, cb Callback) error
+	// Count returns total count of members.
+	Count(ctx context.Context) (int, error)
+	// Peer returns chat object.
+	Peer() peers.Peer
+	// Kick kicks user member.
+	//
+	// If revokeHistory is set, will delete all messages from this member.
+	Kick(ctx context.Context, member tg.InputUserClass, revokeHistory bool) error
+	// EditRights edits rights of all members in this chat/channel.
+	EditRights(ctx context.Context, options MemberRights) error
+}