Move Layers - Groups and Masks to New Layer

Do you want the contents of the active artboard to be moved in a new layer? If I understand the task correctly. Try this code, but it only works with visible and unlocked objects on the artboard.

var doc = activeDocument;
var newLayer = doc.layers.add();
newLayer.name = "Moved";
selection = [];
doc.selectObjectsOnActiveArtboard();
for (var i = 0; i < selection.length; i++) {
  selection[i].move(newLayer, ElementPlacement.PLACEATEND);
}
selection = [];

Can you give more details?  The snippet below moves all layers to a new layer and, for me, retains groups and clipping masks. 

var doc = app.activeDocument;
doc.layers.add().name = "Layer 1";
for (var i = doc.layers.length - 1; i > 0; i--) {
    doc.layers[i].moveToBeginning(doc.layers[0]);
}