Move pipeline status check to API Gateway repository

[strekm]

Description

Evaluation of pipeline status was executed by prow. Move status checks to API Gateway repository similar as it was done in Istio repository.

ACs:

• [x] status checks are not managed in prow
• [x] status checks are implemented in api-gateway repo
• [x] docu updated - https://github.com/kyma-project/api-gateway/pull/1122

Reasons

DoD: - [ ] Provide unit and integration tests.

• [x] Provide documentation. - [ ] Verify if the solution works for both open-source Kyma and SAP BTP, Kyma runtime. - [ ] If you changed the resource limits, explain why it was needed. - [ ] Verify that your contributions don't decrease code coverage. If they do, explain why this is the case. - [ ] Add release notes.

Attachments https://github.com/kyma-project/test-infra/blob/main/prow/config.yaml https://github.com/kyma-project/istio/issues/838

[Ressetkk]

/assign