mattiacus as of 24/09/2024 + fixes in NABC to have it build properly, and rsigns

To be critically reviewed

Followed H's porrectus flexus on DOmine, therefore adding a note, consistent with other inv. of this melody

Switched to ferial tone and its typical melody: tone 5 of the venite is only ever used on sundays and feasts. H has this in tone 5 because the Monastic Office uses this Inv on some feasts.

Looking at Lat. 12601 I think a virga strata is in order to reflect the articulation of ter-ræ.