for TransformHandles provide option to have a seperate uniform scale handle as a white cube like in drei

[bbohlender]

see https://codesandbox.io/p/sandbox/transformcontrols-and-makedefault-forked-fr9glp?file=%2Fsrc%2FApp.js%3A46%2C57

[bbohlender]

implemented in v6.6.13