science/tblite: Update 0.4.0 => 0.5.0

Changelogs:

• https://github.com/tblite/tblite/releases/tag/v0.5.0
• https://github.com/tblite/tblite/compare/v0.4.0...v0.5.0

• Add WWW for main site
• Clarify LICENSE

Approved by: yuri@ (maintainer, Mentor)
Differential Revision: https://reviews.freebsd.org/D53523