[Feature Request] Use foliage tool without instances

Could be nice to allow the users to use the foliage placer without the need of place always instances of the meshes that you want, could be nice to select per mesh if you want instances or not or someway that allow to the same mesh to use instances to be placed in groups and no use instances to be placed individually somewhere, so sound more like a turn on/off button when you use the brush, if is off place individual normal meshes and at turn on place instanced as do now.