Display all collectables in the debug mode map viewer

This would apply to:
- Hearts (blue/red/yellow, or a more dynamic option that supports custom heart colours for if ASH ever gets merged))
- Cassettes (tan)
- Summit Gems (the appropriate colour)
- Possibly a special instance for the moon berry (currently displays as a normal berry, would be recoloured to a green)
Each would be displayed identically to keys/berries, in the form of a 3x3 block with the center tile missing