Revert "Revert "Main gui 개선""

d23004

2023-05-24 fa87a558389d9d425f70afa1c8de54c69875ef2c

 SA_LTT_UI/SA_LTT_UI/Resources/SVG_Icon/GroupBox_Background.svg

새 파일
@@ -0,0 +1,3 @@
<svg width="1000" height="563" viewBox="0 0 1000 563" fill="none" xmlns="http://www.w3.org/2000/svg">
<path d="M0.5 0.5H999.5V558.5C999.5 560.433 997.933 562 996 562H4.00001C2.06701 562 0.5 560.433 0.5 558.5V0.5Z" fill="#D5D8DE" stroke="#23395E"/>
</svg>