UI: expose "Lasso Select" & "Extrude to Cursor" in menus

- Show "Lasso Select" in menus (along with Box & Circle select)
- Show "Extrude to Cursor" (along with other extrude actions).
- Rename operators that add/extrude on Ctrl-Click
  since their names were inconsistent.

This is mainly for discoverability.

release/scripts/startup/bl_ui/space_graph.py

@@ -179,6 +179,7 @@ class GRAPH_MT_select(Menu):
         props.include_handles = True
 
         layout.operator("graph.select_circle")
+        layout.operator_menu_enum("graph.select_lasso", "mode")
 
         layout.separator()
         layout.operator("graph.select_column", text="Columns on Selected Keys").mode = 'KEYS'