Draft: add modules of draftobjects to the proper Doxygen group

This includes `array`, `base`, `bezcurve`, `block`, `bspline`,
`circle`, `clone`, `dimension`, `draft_annotation`, `draftlink`,
`drawingview`, `ellipse`, `facebinder`, `fillet`, `label`,
`patharray`, `point`, `pointarray`, `polygon`, `rectangle`,
`shape2dview`, `shapestring`, `text`, `wire`, `wwproxy`.

These are added to the `draftobjects` Doxygen group
so that the functions and classes contained in each module
are listed appropriately in the automatically generated
documentation.

src/Mod/Draft/draftobjects/patharray.py

@@ -25,7 +25,7 @@
 # *   USA                                                                   *
 # *                                                                         *
 # ***************************************************************************
-"""Provides the object code for the Draft PathArray object.
+"""Provides the object code for the PathArray object.
 
 The copies will be placed along a path like a polyline, spline, or bezier
 curve, and along the selected subelements.
@@ -60,8 +60,8 @@ objects. Therefore, the first solution is simpler, that is, using
 a single property of type `App::PropertyLinkSub`.
 """
 ## @package patharray
-# \ingroup DRAFT
-# \brief Provides the object code for the Draft PathArray object.
+# \ingroup draftobjects
+# \brief Provides the object code for the PathArray object.
 
 import FreeCAD as App
 import DraftVecUtils
@@ -76,6 +76,9 @@ from draftobjects.draftlink import DraftLink
 Part = lz.LazyLoader("Part", globals(), "Part")
 DraftGeomUtils = lz.LazyLoader("DraftGeomUtils", globals(), "DraftGeomUtils")
 
+## \addtogroup draftobjects
+# @{
+
 
 class PathArray(DraftLink):
     """The Draft Path Array object.
@@ -428,6 +431,7 @@ class PathArray(DraftLink):
             _wrn("v0.19, " + obj.Label + ", " + _tr(_info))
 
 
+# Alias for compatibility with v0.18 and earlier
 _PathArray = PathArray
 
 
@@ -617,3 +621,5 @@ def get_parameter_from_v0(edge, offset):
 
 
 getParameterFromV0 = get_parameter_from_v0
+
+## @}