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/mtproto/zap_test.go

@@ -0,0 +1,28 @@
+package mtproto
+
+import (
+	"testing"
+
+	"go.uber.org/zap"
+
+	"go.mau.fi/mautrix-telegram/pkg/gotd/bin"
+	"go.mau.fi/mautrix-telegram/pkg/gotd/tmap"
+)
+
+func BenchmarkConn_logWithType(b *testing.B) {
+	c := Conn{
+		log: zap.NewNop(),
+		types: tmap.New(map[uint32]string{
+			0x3fedd339: "true",
+		}),
+	}
+	buf := bin.Buffer{}
+	buf.PutID(0x3fedd339)
+
+	b.ReportAllocs()
+	b.ResetTimer()
+
+	for i := 0; i < b.N; i++ {
+		c.logWithType(&buf).Info("Hi!")
+	}
+}