Add keyboard shortcut for "Split to Objects" / "Split to Parts"

Is your feature request related to a problem? Please describe. When importing multi-body files (e.g. from Fusion 360) as a single object, splitting it into separate objects or parts currently requires navigating to the toolbar button or right-click menu every time. There is no keyboard shortcut for this, unlike most other frequently used tools (Cut = C, Rotate = R, Arrange = A, etc.). Describe the solution you'd like Add a default keyboard shortcut for "Split to Objects" and/or "Split to Parts" (e.g. Ctrl+Shift+S or similar), consistent with the existing shortcut scheme, and list it in Help → Keyboard Shortcuts. Describe alternatives you've considered Using the toolbar/right-click menu each time — works, but is slow when repeated often on multi-body imports. Additional context This would be especially useful for workflows importing CAD assemblies (multiple bodies) that need to be split into individual objects/parts for printing or coloring.