Point Cloud: Expose 3D Cursor, annotation and ruler tools

<img width="298" alt="image.png" src="attachments/9336d17d-7dd5-445b-892c-ad7e91bb98d6">

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The Selection tools are not working, so I did not add them to the toolbar.

Pull Request: https://projects.blender.org/blender/blender/pulls/134453

scripts/startup/bl_ui/space_toolsystem_toolbar.py

@@ -3478,6 +3478,12 @@ class VIEW3D_PT_tools_active(ToolSelectPanelHelper, Panel):
             None,
             *_tools_annotate,
         ],
+        'EDIT_POINT_CLOUD': [
+            _defs_view3d_generic.cursor,
+            None,
+            *_tools_annotate,
+            _defs_view3d_generic.ruler,
+        ],
         'PARTICLE': [
             *_tools_select,
             _defs_view3d_generic.cursor,