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/markup/keyboard_test.go

@@ -0,0 +1,38 @@
+package markup
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"go.mau.fi/mautrix-telegram/pkg/gotd/tg"
+)
+
+func TestSingleRow(t *testing.T) {
+	a := require.New(t)
+
+	buttons := []tg.KeyboardButtonClass{
+		Button("gotd"),
+		URL("Google!", "https://google.com?q=gotd"),
+		RequestPhone("phone"),
+		RequestGeoLocation("geo"),
+		SwitchInline("inline", "query", true),
+		Game("game"),
+		Buy("buy"),
+		URLAuth("text", "url", 1, "fwd"),
+		RequestPoll("poll", true),
+		UserProfile("BotFather", 93372553),
+		SimpleWebView("demo", "https://webappcontent.telegram.org/demo"),
+		RequestPeer("peer", 0, &tg.RequestPeerTypeUser{}),
+	}
+
+	v, ok := SingleRow(buttons...).(*tg.ReplyKeyboardMarkup)
+	a.True(ok)
+	a.Len(v.Rows, 1)
+	row := v.Rows[0]
+
+	a.Len(row.Buttons, len(buttons))
+	for i, b := range buttons {
+		a.Equal(b, row.Buttons[i])
+	}
+}