refactor: merge html_parser.py with extensions.py

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

extensions.py

@@ -5,6 +5,28 @@ from typing import Any, Optional
 import config
 
 
+class HtmlFormat:
+    @staticmethod
+    def bold(s: str) -> str:
+        return f"<b>{s}</b>"
+
+    @staticmethod
+    def italic(s: str) -> str:
+        return f"<i>{s}</i>"
+
+    @staticmethod
+    def strikethrough(s: str) -> str:
+        return f"<s>{s}</s>"
+
+    @staticmethod
+    def hyperlink(s: str, href: str) -> str:
+        return f"<a href='{href}'>{s}</a>"
+
+    @staticmethod
+    def code(s: str) -> str:
+        return f"<code>{s}</code>"
+
+
 def humanize_tags_from_json(value: str, default: str) -> str:
     if value != "":
         return ", ".join([re.sub("_\\(.*", "", t) for t in value.split()])