07:12 Mathieu Arnold (mat) 

Mk: generate SBOM .pc files for all ports

Each package and subpackage now installs an SBOM file in pkg-config
format, see pc(5).  The file is installed in ${PREFIX}/share/sbom/pc/.
The framework adds it to the plist automatically.

PR:		300098
Differential Revision:	https://reviews.freebsd.org/D60441

    0774722