fetchart: Add new google backend using google custom search
fetchart: Add new google backend using google custom search

Requires an API key from google similar to lyrics plugin.
Limited to 100 queries/day.

sampsyo/beets,mosesfistos1/beetbox,parapente/beets,beetbox/beets,sampsyo/beets,xsteadfastx/beets,pkess/beets,pkess/beets,Freso/beets,artemutin/beets,jcoady9/beets,parapente/beets,Freso/beets,swt30/beets,jcoady9/beets,lengtche/beets,mosesfistos1/beetbox,madmouser1/beets,LordSputnik/beets,lengtche/beets,SusannaMaria/beets,diego-plan9/beets,jackwilsdon/beets,madmouser1/beets,pkess/beets,Freso/beets,madmouser1/beets,artemutin/beets,xsteadfastx/beets,artemutin/beets,SusannaMaria/beets,shamangeorge/beets,shamangeorge/beets,ibmibmibm/beets,SusannaMaria/beets,beetbox/beets,xsteadfastx/beets,shamangeorge/beets,MyTunesFreeMusic/privacy-policy,MyTunesFreeMusic/privacy-policy,mosesfistos1/beetbox,jcoady9/beets,beetbox/beets,swt30/beets,artemutin/beets,LordSputnik/beets,ibmibmibm/beets,Kraymer/beets,Kraymer/beets,SusannaMaria/beets,pkess/beets,mried/beets,swt30/beets,mried/beets,MyTunesFreeMusic/privacy-policy,MyTunesFreeMusic/privacy-policy,ibmibmibm/beets,sampsyo/beets,sampsyo/beets,jcoady9/beets,ibmibmibm/beets,Kraymer/beets,parapente/beets,mried/beets,xsteadfastx/beets,LordSputnik/beets,beetbox/beets,madmouser1/beets,jackwilsdon/beets,jackwilsdon/beets,Kraymer/beets,diego-plan9/beets,Freso/beets,lengtche/beets,parapente/beets,diego-plan9/beets,shamangeorge/beets,swt30/beets,LordSputnik/beets,lengtche/beets,mried/beets,jackwilsdon/beets,diego-plan9/beets,mosesfistos1/beetbox