release reusable pipeline

[sigilioso]

This PR introduces a reusable workflow to release the OHIs.

Usage example:

jobs:
  job_name:
    uses: newrelic/coreint-automation/.github/workflows/trigger_reusable_on_release.yaml@v2
    with:
      tag: ${{ github.event.release.tag_name }}
      integration_name: "integration-name" # without the 'nri-' prefix
    secrets: inherit

• Since the required secrets are common for all OHIs, the workflow can be used with inherited secrets (this force us to use the workflow in the same organization).
• There are flags to skip testing the package, and setting up the publish schema.

[paologallinaharbur]

I am testing how the inputs are passed here (In particular that the events.repository is correctly detected)