Needs to generate SWID tags

[Conan-Kudo]

In addition to os-release(5), we need SWID tags generated in Fedora. SWID tags are defined in ISO/IEC 19770-2:2015.

Here's a sample of what one looks like:

<?xml version="1.0" encoding="utf-8"?>
<SoftwareIdentity
  xmlns="http://standards.iso.org/iso/19770/-2/2015/schema.xsd"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://standards.iso.org/iso/19770/-2/2015/schema.xsd http://standards.iso.org/iso/19770/-2/2015-current/schema.xsd"
  xml:lang="en-US"
  tagId="org.fedoraproject.Fedora-41-KDE"
  tagVersion="1"
  name="Fedora"
  version="41"
  versionScheme="unknown"
  supplemental="true">
  <Entity
    name="Fedora Project"
    regid="fedoraproject.org"
    role="tagCreator softwareCreator" />
  <Meta
    product="Fedora"
    colloquialVersion="41"
    edition="KDE" />
  <Link
    rel="supplemental"
    href="swid:org.fedoraproject.Fedora-41" />
</SoftwareIdentity>

[ikeycode]

OK, feels like we could work these fields into the schema quite trivially.