Need svg images for column and beam reinforcement dialog

[SurajDadral]

Presently, the images in column and beam reinforcement dialog box are screenshots taken from model in FreeCAD. But, due to this, stylesheets are not working properly as reported here: https://forum.freecadweb.org/viewtopic.php?f=23&t=50669#p434958

So, having svg images for column and beam reinforcement icons will fix this issue. Following images needs to change to svg: https://github.com/amrit3701/FreeCAD-Reinforcement/blob/master/icons/Beam_TwoLeggedStirrups.png https://github.com/amrit3701/FreeCAD-Reinforcement/blob/master/icons/CircularColumnReinforcement.png https://github.com/amrit3701/FreeCAD-Reinforcement/blob/master/icons/Column_SingleTieMultipleRebars.png https://github.com/amrit3701/FreeCAD-Reinforcement/blob/master/icons/Column_TwoTiesSixRebars.png

[SurajDadral]

Starting point: https://forum.freecadweb.org/viewtopic.php?f=23&t=50669#p436612 https://forum.freecadweb.org/viewtopic.php?f=23&t=50669#p436693

These may be used as is or after modifications...