Add lolsrv plugin to sync lolcommits to lolsrv

This plugin is pretty similar to *uploldz*, with a few differences:
* lulz are uploaded in the background using `fork` for faster commits
* made for lolsrv, available at https://github.com/eteubert/lolsrv
* lulz are synced on every commit, checking the ones on the lolsrv and uploading the remaining

Would be awesome if this made it into the main repo!