po: Add partial Marathi translation

This has been upstreamed from Endless’ fork, where it was originally
added as a paid-for translation. I can’t speak Marathi, so can’t vouch
for the quality of the translation.

Only one string is translated, but that’s probably better than nothing.

Signed-off-by: Philip Withnall <withnall@endlessm.com>
1 job for new-translations in 20 minutes and 27 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #286415
build-gnome-software

00:20:27