* add ARM support to PKGBUILD

* fixed various issues with the PKGBUILD files

- added checksum to fixed-release PKGBUILD
- added auto-updating version to git-PKGBUILD
- moved PKGBUILD to /build-scripts
- fixed typo in description
- fixed license fields
Co-authored-by: Erik Reider <35975961+ErikReider@users.noreply.github.com>