Update to v2 package format

[hasheddan]

Crossplane packages have been updated to a new static format. The machinery for these types of packages is still under construction, but most providers have already been updated to build the new packages manually. We should provide similar functionality in the Makefile of this repo.

Relevant Issues / PRs:

• Update Providers to v2 package format crossplane#1756
• Update to v2 package format crossplane-contrib/provider-gcp#257
• Download and cache package image contents in package manager crossplane#1795

[cychiang]

I spent some time to look at this issue and also took a look on the following PRs:

• Update Providers to v2 package format crossplane#1756
• Update to v2 package format crossplane-contrib/provider-gcp#257

From those references, I can see in common are changes related to:

• Update and remove Setup Package code block
• Update code from config/crd to package/crds in apis/generate.go
• Replace config/packages folder with packages

In the provider-template I believe the project has been changed to so call v2 package format for awhile since this commit:

• f582148

So I believe it's safe to close this issue.