feat: add go generate support

mentioned in commit 719d1375

mentioned in merge request sylva-projects/sylva-elements/sylva-units-operator!86 (merged)

mentioned in merge request sylva-projects/sylva-elements/workload-cluster-operator!76 (merged)

mentioned in merge request sylva-projects/sylva-elements/heat-operator!66 (merged)

mentioned in merge request sylva-projects/sylva-elements/sylvactl!105 (merged)

mentioned in merge request to-be-continuous/samples/golang-cnb-helm-on-kubernetes!56 (merged)

mentioned in merge request to-be-continuous/samples/golang-cnb-on-kubernetes!58 (merged)

mentioned in merge request to-be-continuous/samples/golang-docker-on-aws!89 (merged)

mentioned in merge request to-be-continuous/samples/golang-on-cloudfoundry!58 (merged)