[GitHub Actions] - Run RC Validations Workflow (#23531)

* Feat: Adding composite and base job (#215)

* Added python_release_candidate job.

* Testing pr from rc_tag.

* Adding GH_TOKEN env var

* Set PR head as WORKING_BRANCH

* Removed unused code.

* Adding Run RC Validation job in CI.md doc file.

* Removed Set Environment Variables step. Setting variables in env property.

* Removed composite rc-validation action.

* Rc validation workflow for Dataflow Taxi, Python Cross Validation and Runners (#227)

* RC Validation Workflow (#228)

Adding the following jobs:
* sql_taxi_with_dataflow
* python_cross_validation
* generate_shared_pubsub
* java_injector
* direct_runner_leaderboard
* dataflow_runner_leaderboard
* direct_runner_gamestats
* dataflow_runner_gamestats
* remove_shared_pubsub

* Adding extras jobs to CI.MD (#230)

* Fixing workflow linter error (#231)

* Using inputs in composite action (#235)

* Using inputs in composite action

Co-authored-by: Elias Segundo <elias.segundo@luisrazo.local>

* Added Verify Working Branch step.

* Adding extras jobs to CI.MD (#230)

Co-authored-by: Elias Segundo Antonio <eliassegundo.segundo@gmail.com>
Co-authored-by: Elias Segundo <elias.segundo@luisrazo.local>