refactor: add html_parser.py

Signed-off-by: mctaylors <cantsendmails@mctaylors.ru>

html_parser.py

@@ -0,0 +1,14 @@
+def bold(s: str) -> str:
+    return f"<b>{s}</b>"
+
+def italic(s: str) -> str:
+    return f"<i>{s}</i>"
+
+def strikethrough(s: str) -> str:
+    return f"<s>{s}</s>"
+
+def hyperlink(s: str, href: str) -> str:
+    return f"<a href='{href}'>{s}</a>"
+
+def code(s: str) -> str:
+    return f"<code>{s}</code>"