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/parser_bench_test.go

@@ -0,0 +1,34 @@
+package html
+
+import (
+	"strings"
+	"testing"
+
+	"go.mau.fi/mautrix-telegram/pkg/gotd/telegram/message/entity"
+)
+
+func BenchmarkHTML(b *testing.B) {
+	input := `<b>bold</b>, <strong>bold</strong>
+<i>italic</i>, <em>italic</em>
+	<u>underline</u>, <ins>underline</ins>
+	<s>strikethrough</s>, <strike>strikethrough</strike>, <del>strikethrough</del>
+	<b>bold <i>italic bold <s>italic bold strikethrough</s> <u>underline italic bold</u></i> bold</b>
+	<a href="http://www.example.com/">inline URL</a>
+	<a href="tg://user?id=123456789">inline mention of a user</a>
+	<code>inline fixed-width code</code>
+	<pre>pre-formatted fixed-width code block</pre>
+	<pre><code class="language-python">pre-formatted fixed-width code block written in the Python programming language</code></pre>`
+	reader := strings.NewReader(input)
+
+	b.ReportAllocs()
+	b.ResetTimer()
+
+	for i := 0; i < b.N; i++ {
+		reader.Reset(input)
+		builder := entity.Builder{}
+
+		if err := HTML(reader, &builder, Options{}); err != nil {
+			b.Fatal(err)
+		}
+	}
+}