Refactor slot op. (#21799)

* Refactor slot op.
Move out of experimenation features

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* Incorporate Hyarion's suggestions

* Update src/Mod/CAM/Path/Op/Slot.py

Co-authored-by: Benjamin Nauck <benjamin@nauck.se>

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Benjamin Nauck <benjamin@nauck.se>

src/Mod/CAM/InitGui.py

@@ -138,6 +138,7 @@ class CAMWorkbench(Workbench):
             "CAM_MillFace",
             "CAM_Helix",
             "CAM_Adaptive",
+            "CAM_Slot",
         ]
         threedopcmdlist = ["CAM_Pocket3D"]
         engravecmdlist = ["CAM_Engrave", "CAM_Deburr", "CAM_Vcarve"]
@@ -189,7 +190,6 @@ class CAMWorkbench(Workbench):
             prepcmdlist.append("CAM_PathShapeTC")
             extracmdlist.extend(["CAM_Area", "CAM_Area_Workplane"])
             specialcmdlist.append("CAM_ThreadMilling")
-            twodopcmdlist.append("CAM_Slot")
 
         if Path.Preferences.advancedOCLFeaturesEnabled():
             try: