0024351: Test cases for AIS dimension presentations to check arrow orientation, text position

- Added test cases to check label and arrows positioning of AIS length, angle, radius, diameter dimensions;
- Added new arguments to "vdim" command to modify "flyout", "arrow orientation", "label position" properties;
- Corrected bug: duplication of text label of linear dimensions for the horizontal-centered text.
- Rename and revise argument interface of "vdimension" (vdim) command.
- Correct test cases for new command name and arguments style.

corrected test cases - check with testdiff instead of "checkcolor"

src/AIS/AIS_Dimension.cxx

@@ -781,6 +781,8 @@ void AIS_Dimension::drawLinearDimension (const Handle(Prs3d_Presentation)& thePr
                        aSecondArrowEnd, aSecondExtensionDir,
                        THE_EMPTY_LABEL, theMode, LabelPosition_None);
       }
+
+      break;
     }
     // ------------------------------------------------------------------------ //
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