refactor(MeshGateway): add ResourceRules to GatewayRules, ResourceOrigin and Protocol to clusters

[michaelbeaumont]

Follow up PRs will introduce support for individual policies

Almost all the changes are because of reformatting in tests and golden files, go commit by commit

See final 3 commits of #11541 for how it will look in policies

Checklist prior to review

• Link to relevant issue as well as docs and UI issues -- Policies targeting real MeshService in spec.to.targetRef aren't applied to MeshGateways #11534
• This will not break child repos: it doesn't hardcode values (.e.g "kumahq" as a image registry) and it will work on Windows, system specific functions like syscall.Mkfifo have equivalent implementation on the other OS --
• Tests (Unit test, E2E tests, manual test on universal and k8s) --
  • Don't forget ci/ labels to run additional/fewer tests
• Do you need to update UPGRADE.md? --
• Does it need to be backported according to the backporting policy? (this GH action will add "backport" label based on these file globs, if you want to prevent it from adding the "backport" label use no-backport-autolabel label) --