Add support for v7 UUIDs to the uuid library

[rdw-software]

The stduuid library hasn't seen active development in a while, so it'll have to be a custom addition (can replace later).

Roadmap:

• Add some rudimentary benchmarks (mainly out of curiosity)
  • UUID4 vs UUID7
  • C++ with FFI vs. Lua/Bitops
• Add unit tests
• Add uuid.v7 as a separate, experimental generator (incompatible with isCanonical and RFC_STRING_PATTERN)
• TBD: Are additional utility methods needed?

In the long term, the UUID library/bindings need a bit of a redesign. This can wait until the RFC is standardized, however.

There's also potential security concerns - see RFC: https://www.rfc-editor.org/rfc/rfc9562#name-timestamp-considerations
These may or may not be important enough to warrant taking them into account when settling on a "stable" implementation.

However, for now just getting something usable will suffice. I want to experiment with the v7 format before going any further.