textproc/feluda: Update 1.11.1 => 1.12.0

Port changes:

• Unbundle libgit2, no more "you might not need libgit2"
• Wordsmith COMMENT: '... your project' => '... a project'
• Remove PORTNAME substitution in PLIST_FILES since 'feluda' is shorter than ${PORTNAME}

Changelog:
https://github.com/anistark/feluda/releases/tag/v1.12.0

Reviewed by: osa (mentor), vvd (co-mentor)
Approved by: osa (mentor)
Differential Revision: https://reviews.freebsd.org/D56098