repo metadata

[hippi777]

hi there! :)

i think it could be nice to add some meta to the repositories, like last sync, location, owner, contact, custom packages, missing packages, supported architectures, clibs, and what not.. :D (plz ignore if i just said anything redundant)

in case of interest, i think single files for each would be the most universal format

(nothing urgent or anything, just some braindump before i forget to come up with the idea :D )