Add remaining ghosts & fix bugs in grid aligned movement

[nucleartide]

Changelog

What is the "shippable increment" of this pull request?

• Add remaining ghosts to game
• Fix lots of bugs in grid aligned movement
• Re-configure level loader to use final level instead of test level

Dev Checklist

• First draft. Implement a working first pass at the feature/problem.
• Final draft. Perform a general review of Files changed and revise anything that needs to be cleaned up.

Presentation Checklist

• Optional: Make a GIF to display what you made.
• Optional: Add discussion points to the readme. Remember: CAR/STAR.
• Cut a new build in Unreal, and upload a GitHub release.