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.go

@@ -0,0 +1,45 @@
+package mtproto
+
+import (
+	"fmt"
+
+	"go.uber.org/zap"
+	"go.uber.org/zap/zapcore"
+
+	"go.mau.fi/mautrix-telegram/pkg/gotd/bin"
+)
+
+type logType struct {
+	ID   uint32
+	Name string
+}
+
+func (l logType) MarshalLogObject(e zapcore.ObjectEncoder) error {
+	typeIDStr := fmt.Sprintf("0x%x", l.ID)
+	e.AddString("type_id", typeIDStr)
+	if l.Name != "" {
+		e.AddString("type_name", l.Name)
+	}
+	return nil
+}
+
+func (c *Conn) logWithBuffer(b *bin.Buffer) *zap.Logger {
+	return c.logWithType(b).With(zap.Int("size_bytes", b.Len()))
+}
+
+func (c *Conn) logWithType(b *bin.Buffer) *zap.Logger {
+	id, err := b.PeekID()
+	if err != nil {
+		// Type info not available.
+		return c.log
+	}
+
+	return c.logWithTypeID(id)
+}
+
+func (c *Conn) logWithTypeID(id uint32) *zap.Logger {
+	return c.log.With(zap.Inline(logType{
+		ID:   id,
+		Name: c.types.Get(id),
+	}))
+}