Robot Minigame BA11

[JustATin555]

Description

Implements a robot minigame and 1 (or more) examples.

• New .env Variable: REACT_APP_USE_BACKEND_ASSET_PREFIX, controls whether or not toS3Path() uses the backend-provided prefix when loading images / sprites

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update
• Code quality improvements

How to test

Checklist

• I have tested this code
• I have updated the documentation

[JustATin555]

Merged into #3090 .