Describe your suggestion

When mapArtMode is active, also consider blocks underneath gravity blocks (sand, gravel, anvils, etc.) and blocks that require a support (carpets, snow layers, etc.)

Settings

placeSupports - Whether or not baritone should place blocks underneath blocks that need it.
supportsRequired - A list of blocks that require a block underneath
And perhaps maybe another option to specify if baritone should use a block in acceptableThrowawayItems or the block specified in the schematic.

Context

When building map art, certain blocks require a block to be placed under it. Currently, baritone tries endlessly to place the block but to no success.

Final checklist

• I know how to properly use check boxes
• I have not used any OwO's or UwU's in this issue.