Prepare release pipeline job

Steps:

• Create release branch
• On each release branch update snapshot version by calling deploy jobs
  • Prepare release shoud have own jovs
  • Create Pr is env.release or (params.createprs and modified files existing) in deploy jobs
• Update kogito-pipelines with new release branch in DSL (as a PR and notification about it)
  • Seed Job to be executed once PR is merged
• PR to remove release notes content on Operator master branch => https://issues.redhat.com/browse/KOGITO-8105
• PR to update optaplanner version on master (or call deploy pipeline with master as base) as well as optaplanner version on examples/apps

Depends on https://issues.redhat.com/browse/KOGITO-3034 which will allow to generate easily the Jenkins jobs for the new release branch created