CAM: Remove hardcoded style for Tool Number, Fix TestPathToolBitSerializer

Fix issue with toolshapes
Renamed fillet to radius
Added Tool Type Filter to library
Fix units so that they honor user preference
Remove the QToolBox widget from the Shape Selector page and combine into a single page.
Fix issue with PropertyBag so that CustomPropertyGroups as a string is converted to enum and enums are handled correctly.
Update TestPathPropertyBag test for enum changes.
Update TestPathToolBitListWidget
Update TestPathToolLibrarySerializer to match new LinuxCNC output
Fix LinuxCNC export too handle ALL tool types, use user preferences for units, and include all lcnc fields

src/Mod/CAM/CAMTests/TestPathToolBitListWidget.py

@@ -55,7 +55,7 @@ class TestToolBitListWidget(PathTestWithAssets):
         self.assertEqual(cell_widget.tool_no, str(tool_no))
         self.assertEqual(cell_widget.upper_text, toolbit.label)
         # Assuming the 5mm_Endmill asset has a shape named 'Endmill'
-        self.assertEqual(cell_widget.lower_text, "5 mm 4-flute endmill, 30 mm cutting edge")
+        self.assertEqual(cell_widget.lower_text, "5.00 mm 4-flute endmill, 30.00 mm cutting edge")
 
         # Verify URI is stored in item data
         stored_uri = item.data(ToolBitUriRole)