Refactor duplicate imports, lateral package imports

[pranavgaikwad]

Describe the bug
This is created to track refactoring effort involving removing mainly the lateral controller imports wherever found. Side objective is to also remove duplicate condition types and move whatever is commonly used to the apis package.

For example, see this:
https://github.com/konveyor/mig-controller/blob/157b004642397bca3d25af4d0f8de14ae28610d2/pkg/controller/migmigration/dvm.go#L14

https://github.com/konveyor/mig-controller/blob/157b004642397bca3d25af4d0f8de14ae28610d2/pkg/controller/migplan/validation.go#L13

[djwhatle]

+1