misc/gitlogue: Update 0.8.0 => 0.9.0
While here, unbundle libgit2.
Changelog:
https://github.com/unhappychoice/gitlogue/releases/tag/v0.9.0
Reviewed by: osa, vvd (mentors)
Approved by: osa (mentor)
Differential Revision: https://reviews.freebsd.org/D56724