feat(MeshProxyPatch): allow policy to target MeshGateway resources

[bartsmykla]

Allow MeshProxyPatch to target MeshGateway resources

Checklist prior to review

• Link to relevant issue as well as docs and UI issues
  • Closes MeshProxyPatch can't be applied for MeshGateway #7623
  • Docs: feat(policies): add support for MeshGateway in MeshProxyPatch kuma-website#1485
• 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
  • It won't
• Tests (Unit test, E2E tests, manual test on universal and k8s)
  • Unit tests updated
• Do you need to update UPGRADE.md?
  • There is no need
• 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)
  • There is no need
• Do you need to explicitly set a > Changelog: entry here or add a ci/ label to run fewer/more tests?