Add support for Actions APIs

[joshmgross]

Describe the feature or problem you’d like to solve

GitHub Actions has a suite of APIs that users may want to use with their AI-powered tools.

Proposed solution

We add tools for Actions, starting with some of the core APIs like:

1. Listing workflows
2. Listing workflow runs
3. Triggering a workflow (via workflow_dispatch)
4. Re-running workflows
5. Downloading logs for a run

Additional context

https://docs.github.com/rest/actions

[jantmanAtCox]

This is extremely important for projects that have CI/CD systems that aren't feasible to run locally, where the only way for the agent to get feedback on changes is to be able to access workflow run status and logs.