feat: add patch set to patch external-name

[akesser]

Description of your changes

We added a patch set to enable to set the crossplane.io/external-name annotation to import a existing resource

Fixes #

I have:

• [x] Read and followed Crossplane's contribution process.
• [x] Run make reviewable test to ensure this PR is ready for review.

How has this code been tested

Tested locally