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/updates/storage.go

@@ -0,0 +1,47 @@
+package updates
+
+import (
+	"context"
+
+	"go.mau.fi/mautrix-telegram/pkg/gotd/tg"
+)
+
+// State is the user internalState.
+type State struct {
+	Pts, Qts, Date, Seq int
+}
+
+func (s State) fromRemote(remote *tg.UpdatesState) State {
+	return State{
+		Pts:  remote.Pts,
+		Qts:  remote.Qts,
+		Date: remote.Date,
+		Seq:  remote.Seq,
+	}
+}
+
+// StateStorage is the users internalState storage.
+//
+// Note:
+// SetPts, SetQts, SetDate, SetSeq, SetDateSeq
+// should return error if user internalState does not exist.
+type StateStorage interface {
+	GetState(ctx context.Context, userID int64) (state State, found bool, err error)
+	SetState(ctx context.Context, userID int64, state State) error
+	SetPts(ctx context.Context, userID int64, pts int) error
+	SetQts(ctx context.Context, userID int64, qts int) error
+	SetDate(ctx context.Context, userID int64, date int) error
+	SetSeq(ctx context.Context, userID int64, seq int) error
+	SetDateSeq(ctx context.Context, userID int64, date, seq int) error
+	GetChannelPts(ctx context.Context, userID, channelID int64) (pts int, found bool, err error)
+	SetChannelPts(ctx context.Context, userID, channelID int64, pts int) error
+	ForEachChannels(ctx context.Context, userID int64, f func(ctx context.Context, channelID int64, pts int) error) error
+}
+
+// AccessHasher stores user and channel access hashes for a user.
+type AccessHasher interface {
+	SetChannelAccessHash(ctx context.Context, forUserID, channelID, accessHash int64) error
+	GetChannelAccessHash(ctx context.Context, forUserID, channelID int64) (accessHash int64, found bool, err error)
+	SetUserAccessHash(ctx context.Context, forUserID, userID, accessHash int64) error
+	GetUserAccessHash(ctx context.Context, forUserID, userID int64) (accessHash int64, found bool, err error)
+}