add workflow

[florentianayuwono]

Applicable spec:

Overview

Rationale

Juju Events Changes

Module Changes

Library Changes

Checklist

• The charm style guide was applied.
• The contributing guide was applied.
• The changes are compliant with ISD054 - Managing Charm Complexity
• The documentation for charmhub is updated.
• The PR is tagged with appropriate label (urgent, trivial, complex).
• The changelog is updated with changes that affects the users of the charm.
• The application version number is updated in github-runner-manager/pyproject.toml.

[github-actions]

TICS Quality Gate

✔️ Passed

github-runner-operator

See the results in the TICS Viewer

The following files have been checked for this project

• github-runner-manager/src/github_runner_manager/configuration/base.py
• github-runner-manager/src/github_runner_manager/manager/runner_manager.py
• github-runner-manager/tests/unit/test_config.py
• github-runner-manager/tests/unit/test_runner_scaler.py

.github/workflows/tics.yaml / TICS / TICS GitHub Action