Update scoring upon consuming energizer dots and ghosts

[nucleartide]

User Story

• Energizers are 50 points
• Eat ghosts for extra points: 200, 400, 800, 1600

Changelog

test.mov

• Fix: consuming energizer dot should award 50 points, not 100 points
• Add scoring for ghosts: points scale from 200 to 400 to 800 to 1600 for ghosts within the same frightened substate
• Implement consumed ghost counter in FCurrentSubstate to encapsulate state + reset behavior
• Fix bug during Frightened substate when ghosts cannot navigate out of the ghost house

Dev checklist

• First draft. Implement a working first pass at the feature.
• First playtest. Thoroughly playtest until you are confident that the feature (and existing features) work.
• Final draft. Perform a general review of Files changed and revise anything that needs to be cleaned up.
• Final playtest. After the changes above, playtest through the game one last time to ensure that everything works.
• Fill out the pull request template. Self-explanatory.
• Remember the GIFs. Include a recording of what's going on!
• Merge. Merge into master.

Release checklist

• Build. Cut a new build in Unreal. If the game doesn't build, fix until it does.
• Tag. Once built, tag the latest commit on master with the latest version string.
• Upload. Upload build to Google Drive.
• Priorities. Prioritize items on work board.
• Next task. Tee up a pull request for the next feature.