Create native support for sentinel as part of terrahub run workflow

[eistrati]

Describe the Feature

Create native support for sentinel as part of terrahub run workflow

Expected Behavior

Based on customers feedback, please add native support for sentinel. We propose the following syntax structure in configuration:

hook:
  plan:
    sentinel:
      path: [ plan.sentinel ]
      command: test
      version: 0.14.2
  apply:
    sentinel:
      path: [ plan.sentinel, apply.sentinel ]
      version: 0.14.1
  destroy:
    sentinel:
      path: [ destroy.sentinel ]
      command: apply
      version: 0.14.0