Sorcerer: Add CLI

[Grazfather]

• Don't generate json anymore, instead generate a zig file and use that directly in sorcer[cli]
• Add a cli that can generate all the output files. This is a lot simpler than regz, but basically just wraps it.
  • Also provides a way to list all targets!
• Add a README

[Grazfather]

Pushed a change to only list chips, since that's the granularity at which we generate SVDs, so basically keeping this as an regz-generator and not a 'target lister'