Add CLI for plotting CCE output data

[knelli2]

Proposed changes

Also update the CCE tutorial to point to this CLI so we don't just have a large block of python code in our tutorial.

Upgrade instructions

Code review checklist

• [ ] The code is documented and the documentation renders correctly. Run make doc to generate the documentation locally into BUILD_DIR/docs/html. Then open index.html.
• [ ] The code follows the stylistic and code quality guidelines listed in the code review guide.
• [ ] The PR lists upgrade instructions and is labeled bugfix or new feature if appropriate.

Further comments

[knelli2]

@nilsdeppe Squashed in the changes