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/html/html.go

@@ -0,0 +1,50 @@
+// Package html contains HTML styling options.
+package html
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"strings"
+
+	"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"
+)
+
+// Bytes reads HTML from given byte slice and returns styling option
+// to build styled text block.
+func Bytes(resolver func(id int64) (tg.InputUserClass, error), b []byte) styling.StyledTextOption {
+	return Reader(resolver, bytes.NewReader(b))
+}
+
+// String reads HTML from given string and returns styling option
+// to build styled text block.
+func String(resolver func(id int64) (tg.InputUserClass, error), s string) styling.StyledTextOption {
+	return Reader(resolver, strings.NewReader(s))
+}
+
+// Format formats string using fmt, parses HTML from formatted string and returns styling option
+// to build styled text block.
+func Format(resolver func(id int64) (tg.InputUserClass, error), format string, args ...interface{}) styling.StyledTextOption {
+	return styling.Custom(func(eb *entity.Builder) error {
+		var buf bytes.Buffer
+		_, err := fmt.Fprintf(&buf, format, args...)
+		if err != nil {
+			return err
+		}
+		return HTML(&buf, eb, Options{
+			UserResolver: resolver,
+		})
+	})
+}
+
+// Reader reads HTML from given reader and returns styling option
+// to build styled text block.
+func Reader(resolver func(id int64) (tg.InputUserClass, error), r io.Reader) styling.StyledTextOption {
+	return styling.Custom(func(eb *entity.Builder) error {
+		return HTML(r, eb, Options{
+			UserResolver: resolver,
+		})
+	})
+}