toolkit: Move TableControl_Impl header to toolkit-internal inc dir

Make the header a bit more widely available inside the
toolkit module.

This is in preparation of merging TableControl_Impl with
its abstract ITableControl base class/interface and
merging TableControl with TableControl_Impl in upcoming
commits.

Change-Id: Id38183ac369f9d90571904816b1f3fbce1e12fa0
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/211083
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>

toolkit/source/controls/table/tablecontrol.cxx

@@ -18,8 +18,8 @@
  */
 
 #include <controls/table/tablecontrol.hxx>
+#include <controls/table/tablecontrol_impl.hxx>
 
-#include "tablecontrol_impl.hxx"
 #include "tabledatawindow.hxx"
 
 #include <com/sun/star/accessibility/AccessibleStateType.hpp>

toolkit/source/controls/table/tablecontrol_impl.cxx

@@ -19,11 +19,11 @@
 
 #include <controls/table/AccessibleGridControl.hxx>
 #include <controls/table/tablecontrol.hxx>
+#include <controls/table/tablecontrol_impl.hxx>
 #include <controls/table/defaultinputhandler.hxx>
 #include <controls/table/tablemodel.hxx>
 
 #include "tabledatawindow.hxx"
-#include "tablecontrol_impl.hxx"
 #include "tablegeometry.hxx"
 
 #include <com/sun/star/accessibility/XAccessible.hpp>

toolkit/source/controls/table/tabledatawindow.cxx

@@ -18,9 +18,9 @@
  */
 
 #include <controls/table/tablecontrol.hxx>
+#include <controls/table/tablecontrol_impl.hxx>
 
 #include "tabledatawindow.hxx"
-#include "tablecontrol_impl.hxx"
 #include "tablegeometry.hxx"
 
 #include <vcl/help.hxx>

toolkit/source/controls/table/tablegeometry.cxx

@@ -17,10 +17,9 @@
  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  */
 
-
 #include "tablegeometry.hxx"
-#include "tablecontrol_impl.hxx"
 
+#include <controls/table/tablecontrol_impl.hxx>
 
 namespace svt::table
 {