TEP-0142: Enable Step Reusability - Implementation

[chitrangpatel]

Implementation for TEP-0142: Enable Step Reusability

• TEP-0142: Introducing the StepAction CRD #7260
• TEP-0142: Introduce feature flag enable-step-actions #7277
• TEP-0142: Introduce StepAction referencing syntax in Steps #7284
• TEP-0142: Referencing StepActions in Steps #7271
  • Remote resolution for StepAction CRD
    • [TEP-0142] Add ResolverRef to Ref #7322
    • [TEP-0142] Refactor extractStepActions #7328
    • [TEP-0142] Remote Resolution for StepAction #7321
    • [TEP-0142] Support default resolver for Ref to remote StepAction #7345
  • TEP-0142: Introduce Params and Results into StepActions CRD #7317
    • TEP-0142: Add syntax for providing params to StepActions #7334
    • TEP-0142: Add support for params between Step and StepActions #7332
    • Support for results (termination message and sidecar logs, array and object results) from StepActions
      • TEP-0142: Introduce Value in TaskResults #7347
      • TEP-0142: Introduce StepResults in Steps, StepActions #7382
      • TEP-0142: Surface step results via termination message #7349
      • TEP-0142: Surface step results via sidecar logs #7414
  • Support for VolumeMounts and Security Context
    • [TEP-0142] Add SecurityContext #7337
    • [TEP-0142] Add VolumeMounts to StepAction #7340

POC PR: #7124