ports-mgmt/pkg: update to 2.1.0

/!\ Committer visible changes /!\
in poudriere and system using pkg add, pkg will verify that provides
requires (including for shlibs) are satisfied, which meaning it can now
stop stating a missing required dependency is missing, which up to now
where happening unnoticed!

Major changes:

• pkg add: now supports shlibs and regular provides/requires
• info -r and -d now shows shlibs and regular provides/requires
• new --script-no-exec: which makes pkg dies if a script attempt to exec an external binary

Other changes:

• improve VITAL flag handling
• upgrade libcurl to latest version
• fix pkg bootstrap -y
• libpkg: allow non interactive way to set IGNORE\_OSVERSION
• lots of internal bug fixes
• fix progress

PR: 285325
Exp-run: antoine