Adding mesa-frames examples

[adamamer20]

No description provided.

[EwoutH]

To test them in CI, you can take a similar approach to:

• Make GIS models testable and test in CI #171
• Add test script for GIS examples and run that in CI mesa-geo#241

@rht we are getting some duplicate scripts now. On the one hand it's very explicit (which is nice), but it has the risk of getting out of sync. Maybe we can combine some stuff or split something in an utility function. Do you have any ideas for that?

[rht]

Were you referring to the test scripts in Python (instead of YAML)? What about putting them in the maintenance folder of Mesa-Geo?