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/query/dialogs/specialize.go

@@ -0,0 +1,60 @@
+package dialogs
+
+import (
+	"go.mau.fi/mautrix-telegram/pkg/gotd/telegram/message/peer"
+	"go.mau.fi/mautrix-telegram/pkg/gotd/telegram/query/channels/participants"
+	"go.mau.fi/mautrix-telegram/pkg/gotd/telegram/query/messages"
+	"go.mau.fi/mautrix-telegram/pkg/gotd/telegram/query/photos"
+	"go.mau.fi/mautrix-telegram/pkg/gotd/tg"
+)
+
+// Messages returns new messages history query builder for current dialog.
+func (e Elem) Messages(raw *tg.Client) *messages.GetHistoryQueryBuilder {
+	return messages.NewQueryBuilder(raw).GetHistory(e.Peer)
+}
+
+// Search returns new search query builder for current dialog.
+func (e Elem) Search(raw *tg.Client) *messages.SearchQueryBuilder {
+	return messages.NewQueryBuilder(raw).Search(e.Peer)
+}
+
+// Replies returns new replies query builder for current dialog.
+func (e Elem) Replies(raw *tg.Client) *messages.GetRepliesQueryBuilder {
+	return messages.NewQueryBuilder(raw).GetReplies(e.Peer)
+}
+
+// UnreadMentions returns new unread mentions query builder for current dialog.
+func (e Elem) UnreadMentions(raw *tg.Client) *messages.GetUnreadMentionsQueryBuilder {
+	return messages.NewQueryBuilder(raw).GetUnreadMentions(e.Peer)
+}
+
+// RecentLocations returns new live location history query builder for current dialog.
+func (e Elem) RecentLocations(raw *tg.Client) *messages.GetRecentLocationsQueryBuilder {
+	return messages.NewQueryBuilder(raw).GetRecentLocations(e.Peer)
+}
+
+// UserPhotos returns new user photo query builder for current dialog.
+// If peer is not user, returns false.
+func (e Elem) UserPhotos(raw *tg.Client) (*photos.GetUserPhotosQueryBuilder, bool) {
+	user, ok := peer.ToInputUser(e.Peer)
+	if !ok {
+		return nil, false
+	}
+	return photos.NewQueryBuilder(raw).GetUserPhotos(user), true
+}
+
+// Participants returns new channel participants query builder for current dialog.
+// If peer is not channel, returns false.
+func (e Elem) Participants(raw *tg.Client) (*participants.GetParticipantsQueryBuilder, bool) {
+	channel, ok := peer.ToInputChannel(e.Peer)
+	if !ok {
+		return nil, false
+	}
+	return participants.NewQueryBuilder(raw).GetParticipants(channel), true
+}
+
+// Deleted denotes that dialog is deleted.
+func (e Elem) Deleted() bool {
+	_, ok := e.Peer.(*tg.InputPeerEmpty)
+	return ok
+}