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

[whatisdot]

PR Checklist

Please check if your PR fulfills the following requirements:

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

PR Type

What kind of change does this PR introduce?

• Bug fix
• 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?

• Request: Define Outputs #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
• No

[KyleTryon]

Excellent addition, thank you for this! We'll have a new release go out either today or no later than end of week.