Not all the fields of `os-release(5)` seem to map into the existing schema

[Conan-Kudo]

Looking over the examples and the schema, I don't see a complete mapping of os-release(5) values to this format.

Notably, in Fedora, we use the following attributes:

• VARIANT_ID
• VARIANT
• RELEASE_TYPE
• LOGO
• DEFAULT_HOSTNAME
• CPE_NAME
• VERSION_CODENAME

Downstreams like CentOS Stream and AlmaLinux use even more:

• ID_LIKE

There are also distro-specific keys that need to be represented (e.g. REDHAT_*, UBUNTU_*, etc.)

How do we support these in this system?

[ikeycode]

SO we'd need to reach consensus imo on branding and security sections in the schema, and truthfully branding is going to be the PITA version. We want to ensure we can reference locally available assets whilst also referencing online assets.

ID_LIKE is explicitly supported as >identity>id_like in the schema, and perhaps we should permit x- keys for custom specifiers?