Refactoring SketchException to be available outside of app

[joshgiesbrecht]

Refactored SketchException to live in :app:utils, as per discussion in draft PR #1164. (resubmitted because that draft PR turned into an all-out mess of unrelated commits somehow)

Before merge:

• Disable/remove GitHub actions related to Ant

Closes #1153

[Stefterv]

Hi @joshgiesbrecht, thank you again for your work on this! I just ran your branch locally and it breaks Android mode since it is looking for the SketchException class but cannot find it within the processing.app. We should keep a SketchException in processing.app and check if it works if it is just an extended version of the processing.utils one.

[joshgiesbrecht]

I think we're good to go now. I wrote a new, very tiny processing.app.SketchException that extends the utils one, so not only does it allow other modes to work but it still plays nicely when testing if something is a processing.utils.SketchException.

Once this is released, I'll submit changes to the other modes so they refer directly to the utils class, and when those are released then I'll come back and delete the extra file. Hopefully. Fingers crossed. 😆

[Stefterv]

Thank you @joshgiesbrecht! Not sure if the super wrappers are necessary, and could you mark the wrapper class as Deprecated?

[joshgiesbrecht]

Deprecated marked. I didn't expect the wrappers would be necessary either, but Idea complained and said it was a compile problem, so I let it generate them. 🤷

[joshgiesbrecht]

Not sure how to connect this PR in github to the issue, but it's resolving issue #1153