Draft: new Draft_OrthoArray command

It replaces the older `Draft_Array` command, and provides
a task panel to select the properties, similar to the
`Draft_PolarArray` and `Draft_CircularArray` commands.

It can also create `App::Links` directly from this task
panel, so it also replaces the `Draft_LinkArray`
introduced by the LinkMerge.

src/Mod/Draft/draftobjects/orthoarray.py

@@ -0,0 +1,60 @@
+"""Provide the object code for Draft Array."""
+## @package orthoarray
+# \ingroup DRAFT
+# \brief Provide the object code for Draft Array.
+
+# ***************************************************************************
+# *   (c) 2020 Eliud Cabrera Castillo <e.cabrera-castillo@tum.de>           *
+# *                                                                         *
+# *   This file is part of the FreeCAD CAx development system.              *
+# *                                                                         *
+# *   This program is free software; you can redistribute it and/or modify  *
+# *   it under the terms of the GNU Lesser General Public License (LGPL)    *
+# *   as published by the Free Software Foundation; either version 2 of     *
+# *   the License, or (at your option) any later version.                   *
+# *   for detail see the LICENCE text file.                                 *
+# *                                                                         *
+# *   FreeCAD is distributed in the hope that it will be useful,            *
+# *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+# *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+# *   GNU Library General Public License for more details.                  *
+# *                                                                         *
+# *   You should have received a copy of the GNU Library General Public     *
+# *   License along with FreeCAD; if not, write to the Free Software        *
+# *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  *
+# *   USA                                                                   *
+# *                                                                         *
+# ***************************************************************************
+
+import FreeCAD as App
+import Draft
+
+
+def make_ortho_array(obj,
+                     v_x=App.Vector(10, 0, 0),
+                     v_y=App.Vector(0, 10, 0),
+                     v_z=App.Vector(0, 0, 10),
+                     n_x=2,
+                     n_y=2,
+                     n_z=1,
+                     use_link=False):
+    """Create an orthogonal array from the given object."""
+    obj = Draft.makeArray(obj,
+                          arg1=v_x, arg2=v_y, arg3=v_z,
+                          arg4=n_x, arg5=n_y, arg6=n_z,
+                          useLink=use_link)
+    return obj
+
+
+def make_ortho_array2(obj,
+                      v_x=App.Vector(10, 0, 0),
+                      v_y=App.Vector(0, 10, 0),
+                      n_x=2,
+                      n_y=2,
+                      use_link=False):
+    """Create a 2D orthogonal array from the given object."""
+    obj = Draft.makeArray(obj,
+                          arg1=v_x, arg2=v_y,
+                          arg3=n_x, arg4=n_y,
+                          useLink=use_link)
+    return obj