cad/openfpgaloader: 0.13.1 => 1.0.0

Changelogs:

• https://github.com/trabucayre/openFPGALoader/releases/tag/v1.0.0
• https://github.com/trabucayre/openFPGALoader/compare/v0.13.1...v1.0.0

• Clarify LICENSE

Approved by: yuri@ (maintainer, Mentor)
Differential Revision: https://reviews.freebsd.org/D53572