Add some test scenarios

[CelticMinstrel]

It's often hard to test certain features, especially new features, because it relies on having a scenario that uses the feature. To make things easier, we should have some test scenarios committed to the repository that can be used for such testing.

[NQNStudios]

I have 2 test scenarios for testing movement to every boundary without crashing, and a scenario for testing Display Picture. Right now they're in my repo NQNStudios/cboe-replay-testing which I have not kept up to date with any of the new changes to the replay system and am going to end up retooling completely.

[NQNStudios]

Maybe debug builds could package the test scenarios in.

[CelticMinstrel]

If you have a scenario that you'd like to submit as a test scenario, feel free to open a pull request (but please untar it into a directory first rather than directly submitting the .boes file).