Implement Multi Arch Support For Devfile Repositories

[Jdubrick]

/kind epic
/area ci
/area registry

Epic Goal

In order to make a smooth transition to running our CI workloads on arm64 nodes we need to ensure that our images can be built for arm64 architectures as well as amd64.

This issue is related to #1492

Acceptance Criteria

• [Spike] Investigate CI Workloads And Images That Can Be Migrated To Arm64 / Multi-Arch #1537
• Implement multi-arch image building for oci-registry #1546
• Implement multi-arch image building for devfile-index & devfile-index-base #1547
• Implement multi-arch image building for registry-viewer #1548
• Implement multi-arch image building/pushing for registry-operator #1549
• Multi-arch support for integration tests #1550
• Multi-arch Support for Registry CI #1551