Make commands syntax to meet coding rules.
Correct angle dimension initialization to allow ellipse input geometry with equal radii.
Change default value of arrow angle for dimensions (from 20 to 12 degrees).
Add arlength, arangle, textmode, textsize to vdimension and vdimparam Draw commands.
Add color parameter to vdimension and vdimparam.
Display dimensions by default.
Add dimensions demo script samples/tcl/dimensions.tcl.
Add file for test case for issue CR25235
AIS_Dimension::GetTextPosition() and AIS_Dimension::SetTextPosition() methods were added.
Added possibility to set and unset text label alignment respectively to the attach points after text position changed.
Added test cases to check text positioning with dimension parameters and with setting 3D point.
Corrected DRAW commands vmovedim, vangledim, vdistdim, vradiusdim.
Corrections of AIS_Dimension::SetTextPosition(): aspect parameters are not changed inside it.
Layout mode was removed; test cases and vdimparams, vdimension commands were corrected.
remarks: coding style, removing redundant code of LayoutMode enumeration.
