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/message/text.go

@@ -0,0 +1,74 @@
+package message
+
+import (
+	"context"
+
+	"github.com/go-faster/errors"
+
+	"go.mau.fi/mautrix-telegram/pkg/gotd/telegram/message/entity"
+	"go.mau.fi/mautrix-telegram/pkg/gotd/telegram/message/styling"
+	"go.mau.fi/mautrix-telegram/pkg/gotd/tg"
+)
+
+func (b *Builder) sendRequest(
+	p tg.InputPeerClass,
+	msg string,
+	entities []tg.MessageEntityClass,
+) *tg.MessagesSendMessageRequest {
+	return &tg.MessagesSendMessageRequest{
+		NoWebpage:    b.noWebpage,
+		Silent:       b.silent,
+		Background:   b.background,
+		ClearDraft:   b.clearDraft,
+		Noforwards:   b.noForwards,
+		Peer:         p,
+		ReplyTo:      b.replyTo,
+		Message:      msg,
+		RandomID:     0,
+		ReplyMarkup:  b.replyMarkup,
+		Entities:     entities,
+		ScheduleDate: b.scheduleDate,
+		SendAs:       b.sendAs,
+	}
+}
+
+// Text sends text message.
+func (b *Builder) Text(ctx context.Context, msg string) (tg.UpdatesClass, error) {
+	p, err := b.peer(ctx)
+	if err != nil {
+		return nil, errors.Wrap(err, "peer")
+	}
+
+	upd, err := b.sender.sendMessage(ctx, b.sendRequest(p, msg, nil))
+	if err != nil {
+		return nil, errors.Wrap(err, "send text")
+	}
+
+	return upd, nil
+}
+
+// Textf formats and sends text message.
+func (b *Builder) Textf(ctx context.Context, format string, args ...interface{}) (tg.UpdatesClass, error) {
+	return b.Text(ctx, formatMessage(format, args...))
+}
+
+// StyledText sends styled text message.
+func (b *Builder) StyledText(ctx context.Context, texts ...StyledTextOption) (tg.UpdatesClass, error) {
+	p, err := b.peer(ctx)
+	if err != nil {
+		return nil, errors.Wrap(err, "peer")
+	}
+
+	tb := entity.Builder{}
+	if err := styling.Perform(&tb, texts...); err != nil {
+		return nil, err
+	}
+	msg, entities := tb.Complete()
+
+	upd, err := b.sender.sendMessage(ctx, b.sendRequest(p, msg, entities))
+	if err != nil {
+		return nil, errors.Wrap(err, "send styled text")
+	}
+
+	return upd, nil
+}