[vinyl] Add test for File.isVinyl
[vinyl] Add test for File.isVinyl

AbraaoAlves/DefinitelyTyped,georgemarshall/DefinitelyTyped,benishouga/DefinitelyTyped,sledorze/DefinitelyTyped,isman-usoh/DefinitelyTyped,gandjustas/DefinitelyTyped,HPFOD/DefinitelyTyped,AgentME/DefinitelyTyped,schmuli/DefinitelyTyped,minodisk/DefinitelyTyped,rcchen/DefinitelyTyped,arusakov/DefinitelyTyped,ashwinr/DefinitelyTyped,laurentiustamate94/DefinitelyTyped,chrootsu/DefinitelyTyped,zuzusik/DefinitelyTyped,benishouga/DefinitelyTyped,johan-gorter/DefinitelyTyped,Penryn/DefinitelyTyped,slavomirvojacek/DefinitelyTyped,danfma/DefinitelyTyped,rcchen/DefinitelyTyped,danfma/DefinitelyTyped,jimthedev/DefinitelyTyped,dsebastien/DefinitelyTyped,aciccarello/DefinitelyTyped,abner/DefinitelyTyped,pocesar/DefinitelyTyped,use-strict/DefinitelyTyped,schmuli/DefinitelyTyped,jimthedev/DefinitelyTyped,abner/DefinitelyTyped,damianog/DefinitelyTyped,pocesar/DefinitelyTyped,pocesar/DefinitelyTyped,shlomiassaf/DefinitelyTyped,magny/DefinitelyTyped,hellopao/DefinitelyTyped,zuzusik/DefinitelyTyped,yuit/DefinitelyTyped,abbasmhd/DefinitelyTyped,AbraaoAlves/DefinitelyTyped,scriby/DefinitelyTyped,aciccarello/DefinitelyTyped,hellopao/DefinitelyTyped,mcrawshaw/DefinitelyTyped,alvarorahul/DefinitelyTyped,subash-a/DefinitelyTyped,dsebastien/DefinitelyTyped,Penryn/DefinitelyTyped,benliddicott/DefinitelyTyped,markogresak/DefinitelyTyped,arusakov/DefinitelyTyped,minodisk/DefinitelyTyped,use-strict/DefinitelyTyped,progre/DefinitelyTyped,abbasmhd/DefinitelyTyped,benishouga/DefinitelyTyped,martinduparc/DefinitelyTyped,shlomiassaf/DefinitelyTyped,xStrom/DefinitelyTyped,YousefED/DefinitelyTyped,GiedriusGrabauskas/DefinitelyTyped,QuatroCode/DefinitelyTyped,georgemarshall/DefinitelyTyped,alexdresko/DefinitelyTyped,syuilo/DefinitelyTyped,alexdresko/DefinitelyTyped,AgentME/DefinitelyTyped,schmuli/DefinitelyTyped,yuit/DefinitelyTyped,isman-usoh/DefinitelyTyped,chrismbarr/DefinitelyTyped,one-pieces/DefinitelyTyped,hellopao/DefinitelyTyped,progre/DefinitelyTyped,YousefED/DefinitelyTyped,micurs/DefinitelyTyped,scriby/DefinitelyTyped,subash-a/DefinitelyTyped,slavomirvojacek/DefinitelyTyped,alvarorahul/DefinitelyTyped,martinduparc/DefinitelyTyped,zuzusik/DefinitelyTyped,smrq/DefinitelyTyped,gandjustas/DefinitelyTyped,magny/DefinitelyTyped,xStrom/DefinitelyTyped,QuatroCode/DefinitelyTyped,chrootsu/DefinitelyTyped,slavomirvojacek/adbrain-typescript-definitions,AbraaoAlves/DefinitelyTyped,johan-gorter/DefinitelyTyped,AgentME/DefinitelyTyped,GiedriusGrabauskas/DefinitelyTyped,smrq/DefinitelyTyped,rolandzwaga/DefinitelyTyped,psnider/DefinitelyTyped,HPFOD/DefinitelyTyped,psnider/DefinitelyTyped,georgemarshall/DefinitelyTyped,chrismbarr/DefinitelyTyped,psnider/DefinitelyTyped,ashwinr/DefinitelyTyped,aciccarello/DefinitelyTyped,syuilo/DefinitelyTyped,borisyankov/DefinitelyTyped,borisyankov/DefinitelyTyped,jimthedev/DefinitelyTyped,mcrawshaw/DefinitelyTyped,martinduparc/DefinitelyTyped,damianog/DefinitelyTyped,sledorze/DefinitelyTyped,amir-arad/DefinitelyTyped,AgentME/DefinitelyTyped,daptiv/DefinitelyTyped,arusakov/DefinitelyTyped,mcliment/DefinitelyTyped,georgemarshall/DefinitelyTyped,nycdotnet/DefinitelyTyped,rolandzwaga/DefinitelyTyped,nycdotnet/DefinitelyTyped,slavomirvojacek/adbrain-typescript-definitions