Implement Video Game Modes

[prodestrian]

• Refactor config/json file schema to reduce memory footprint
• Bump reserved StaticJsonDocument memory to reflect new schema
• Refactor ConfigManager to more cleanly extract JSON configuration
• Update schema of all Configuration structures
• Add actual loading of TVG Mode configs (Slime/Stasis/Meson)
• Restore ability to run animations in reverse
• Add optional flag to reset LEDs with each animation
• Add ability to automatically ramp from previous speed to new speed without specifying in preset
• Update Lights class to remove all hard-coded animation settings and read from ConfigManager instead
• Add support for VENTING state and remove OVERHEATING (for now)

See #19 for further details