Develop building pipeline for livebuild CI

The pipeline configuration has been discussed in the Building & Testing WG:

1. Raise a Pull Request.
2. Author of the PR will add /build or /test as a comment in the PR

/build command:

• Syntax: /build
• Generate a new livebuild image with the code changes in PR (IMP: PR should always be rebased with the main branch so that all the merged PRs are taken for creating the livebuild image).
• Output: quay.io/modh/rhods-operator-live-catalog:{repo-name}-{jira-issue}

/test command:

• Syntax: /test
• If the /build command has not been executed, trigger the build pipeline.
• Once the jenkins pipeline for creating the livebuild is successful, automatically smoke test jenkins pipeline will get triggered using the livebuild image.
• After smoke job completion, status of the smoke test is added (PASS/FAIL) in the PR.
• If passed, The Jira issue corresponding to the PR will be updated from "Coding In Progress" to "Pull request Sent" once the step 3 adds comment as "PASS" in the PR.
• In case of failure, author of the PR debugs and analyses the failure and reruns /test.
• When reviewers approve the change and it is finally merged into the main branch the Jira issue will be updated from “Pull request Sent” to “Verified for RC”.