Create a tile palette

Pick the matching reference doc based on what the user wants, then follow it:

• Tile Palette — references/palette-create.md — when the user wants to organize tiles for 2D level design or create a new rectangular, hexagonal, isometric, or isometric Z as Y grid layout.
• Blank/empty RuleTile (no sprites provided) — references/ruletile-createempty.md — when the user wants a blank RuleTile (rectangular grid), HexagonalRuleTile, or IsometricRuleTile for custom rule configuration and has not provided or referenced any sprites.
• RuleTile built from existing sprites (sprites, terrain art, edge tiles provided) — references/ruletile-createfromsegment.md — when the user wants tiles that autotile as they paint, or a RuleTile built from existing terrain or edge sprites so tiles connect correctly.