add case for non-existent package.json to `kpm check`
add case for non-existent package.json to `kpm check`

seripap/emojiless-yarn,mvestergaard/yarn,FLGMwt/yarn,andreypopp/esy,dxu/yarn,mvestergaard/yarn,bsansouci/esy,CHECK24/yarn,MiguelAlho/yarn,andreypopp/esy,joeyespo/yarn,mgcrea/yarn,suitupalex/yarn,mgcrea/yarn,mourner/yarn,andreypopp/esy,troydemonbreun/yarn,FLGMwt/yarn,joeyespo/yarn,onemen/yarn,kasperlewau/yarn,onemen/yarn,bsansouci/esy,kasperlewau/yarn,dguo/yarn,ConAntonakos/yarn,dguo/yarn,bsansouci/esy,CHECK24/yarn,ConAntonakos/yarn,seripap/emojiless-yarn,dxu/yarn,suitupalex/yarn,mourner/yarn,lawliet89/yarn,MiguelAlho/yarn,lawliet89/yarn,troydemonbreun/yarn