Proposal: Use semver instead of dates for schema IDs

[michaeltlombardi]

Using $schema rather than a semver version requires forward compat to just give parsing a try and hope that anything that would be considered a major version change isn't still parsable by an older client. (Alternatively, you can just have no forward compat.)

Have you considered embedding a semver version number in the schema URL to enable forward compatability?

Originally posted by @JohnMcPMS in https://github.com/PowerShell/DSC/pull/94#discussion_r1283590229