audio/ft2-clone: Rename and update to 1.80

Rename the audio/fasttracker2 package to audio/ft2-clone to align with
the upstream naming convention. Update the package to version 1.80.

Note that version 1.81 has been observed to cause segmentation faults
and has therefore been skipped. Additionally, apply recommendations from
portlint, portclippy, and portfmt.