Complete ARM Support

[jeff-mccoy]

Currently we do not publish an arm init package (it was temporarily hard-coded to amd64) and lack several things for robust arm/amd support. Some issues, such as Iron Bank lacking arm images we will not be able to overcome, but those packages are already coded for amd only.

• Product an arm-base zarf-init.tar.zst along with the amd-based one on each release
• Update package names to include the architecture as a suffix to avoid having to decompress/inspect to identify, e.g. zarf-init-amd64.tar.zst or zarf-package-appliance-demo-multi-games-arm64.tar.zst
• Provide the package arch as a variable for use with templating components to simplify switching arch, e.g. https://github.com/k3s-io/k3s/releases/download/v1.21.6+k3s1/k3s-airgap-images-{{architecture}}.tar.zst
• Compile arm versions of the injector binaries (rust and go) and include them in the arm-based init package. Note without this M1 Mac's with Rosetta will actually work since they magically allow amd binaries to run in arm containers, but other platforms would not.

[jeff-mccoy]

re-opened, aggressive github PR close 🤣