Update gitignore (#2807)
Update gitignore (#2807)

* Add a warning for preparing HTTP exception

* Update .gitignore add .vscode to list

* Update web_exceptions.py

* Update web_exceptions.py

* Update web_exceptions.py

arthurdarcet/aiohttp,KeepSafe/aiohttp,rutsky/aiohttp,arthurdarcet/aiohttp,rutsky/aiohttp,KeepSafe/aiohttp,arthurdarcet/aiohttp,KeepSafe/aiohttp,rutsky/aiohttp