output runtime graphs for github actions ci workflows

idea derived from this issue.

• python >= 3.5
• matplotlib

1. Ensure requirements are installed/ working.
2. Follow this to generate a personal access token.
3. Run the script with

> python main.py --user="<Your github Username>" --token="<Your generated token>" --repo="<name of the workflow repo>" --owner="<owner of the workflow repo>"

4. Profit.

• make this tool async