[SPIKE] - Introduce public Greenhouse/cloudoperators packages

[uwe-mayer]

Priority

None

User Story

As a developer I want to consume Greenhouse go. packages. E.g. reconcile lifecycle, label propagation, maybe test setup, CEL resolving

Description

TBD
Let's find out the best way to offer Greenhouse functionality as common packages.

Acceptance Criteria

• We have defined and PoCed a way to provide Greenhouse/cloudoperators common packages

Reference Issues

No response