* Add component with settable field, clamped to [0,1] range
* Get all MeshRenderers in component & children (recursively)
* Modfiy lightmap scale of all MeshRenderers
* Cleanup/comments
* Move tool to Scripts/EditorTools
* Update LightmapScaleSetter.cs
Removed the cap at 1f
Co-authored-by: Ciro Continisio <ciro@unity3d.com>