Extensions: Test the ability for the extensions operator to handle extension assets as tgz

[aalves08]

Is your feature request related to a problem? Please describe.

There's a new dev Rancher image (ping me for details/access) with a change that adds a new field compressedEndpoint in the UIPlugin CRD that can point to a tgz file. Handling extensions assets on the operator side compressed via tgz is a major performance enhancement that requires testing before we commit to the work of updating our build process.

Gameplan would be something like:

• Find a way to test dev image provided to see if all works well with the tgz
• If test looks good, update our build process to include the compressed tgz as an asset of an extension. We need to continue with the non-compressed assets as well as an alternative + supporting current published assets

Describe the solution you'd like

Describe alternatives you've considered

Additional context