feat(outputs): set pipeline POST response data as GitHub Action outputs

[whatisdot]

PR Checklist

Please check if your PR fulfills the following requirements:

• [x] The commit message follows our contributor guidelines.
• [ ] ~Tests for the changes have been added (for bug fixes / features)~
• [x] Documentation has been added or updated where needed.

PR Type

What kind of change does this PR introduce?

• [ ] Bug fix
• [x] Feature
• [ ] Code style update (formatting, local variables)
• [ ] Refactoring (no functional changes, no api changes)
• [ ] Build related changes
• [ ] CI related changes
• [ ] Other... Please describe:

What issues are resolved by this PR?

• 28

Describe the new behavior.

Implements the description outlined in #28 to add Outputs to the GitHub Action in order to enable downstream projects to pull the pipeline number and id.

Example GitHub Job Steps

      - name: Deploying to ${{ inputs.environment_name }} with CircleCI Pipeline
        id: cci_pipeline
        uses:  snapsheet/trigger-circleci-pipeline-action@add_pipeline_request_outputs
        with:
          GHA_Data: ${{ toJSON(inputs) }}
          GHA_Meta: ${{ inputs.environment_name }}
          CCI_Context: ${{ fromJson(steps.environment_config.outputs.json_string).context }}
        env:
          CCI_TOKEN: ${{ secrets.CCI_TOKEN }}
          CCI_HOST: circleci.com # ...now required...?

      - name: Check CircleCI Outputs
        run: |
          echo "id: ${{ steps.cci_pipeline.outputs.id }}"
          echo "state: ${{ steps.cci_pipeline.outputs.state }}"
          echo "created_at: ${{ steps.cci_pipeline.outputs.created_at }}"
          echo "number: ${{ steps.cci_pipeline.outputs.number }}"

You should now see the outputs in your run logs:

Successfully triggered CircleCI Pipeline Run echo "id: 0f1c3884-fa98-4b9d-a95d-b473dd398cf1" id: 0f1c3884-fa98-4b9d-a95d-b473dd398cf1 state: pending created_at: 2023-03-22T19:08:10.214Z number: 1298

Does this PR introduce a breaking change?

• [ ] Yes
• [x] No