misc: add .idea to .gitignore for WebStorm developers (#9275)
misc: add .idea to .gitignore for WebStorm developers (#9275)


wardpeet/lighthouse,wardpeet/lighthouse,GoogleChrome/lighthouse,wardpeet/lighthouse,wardpeet/lighthouse,GoogleChrome/lighthouse,umaar/lighthouse,umaar/lighthouse,ev1stensberg/lighthouse,ev1stensberg/lighthouse,GoogleChrome/lighthouse,ev1stensberg/lighthouse,ev1stensberg/lighthouse,wardpeet/lighthouse,GoogleChrome/lighthouse,umaar/lighthouse,umaar/lighthouse,GoogleChrome/lighthouse