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/internal/e2etest/options.go

@@ -0,0 +1,37 @@
+package e2etest
+
+import (
+	"io"
+
+	"go.uber.org/zap"
+
+	"go.mau.fi/mautrix-telegram/pkg/gotd/constant"
+	"go.mau.fi/mautrix-telegram/pkg/gotd/crypto"
+)
+
+// TestOptions contains some common test server settings.
+type TestOptions struct {
+	AppID   int
+	AppHash string
+	DC      int
+	Random  io.Reader
+	Logger  *zap.Logger
+}
+
+func (opt *TestOptions) setDefaults() {
+	if opt.AppID == 0 {
+		opt.AppID = constant.TestAppID
+	}
+	if opt.AppHash == "" {
+		opt.AppHash = constant.TestAppHash
+	}
+	if opt.DC == 0 {
+		opt.DC = 2
+	}
+	if opt.Random == nil {
+		opt.Random = crypto.DefaultRand()
+	}
+	if opt.Logger == nil {
+		opt.Logger = zap.NewNop()
+	}
+}