Revert "Revert "Main gui 개선""

d23004

2023-05-24 fa87a558389d9d425f70afa1c8de54c69875ef2c

 SA_LTT_UI/SA_LTT_UI/bin/Debug/Resources/SVG_Icon/SubGroubbox_Background.svg

새 파일
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<svg width="1920" height="1080" viewBox="0 0 1920 1080" fill="none" xmlns="http://www.w3.org/2000/svg">
<path d="M0.5 0.5H1919.5V1076C1919.5 1077.93 1917.93 1079.5 1916 1079.5H4.00005C2.06705 1079.5 0.5 1077.93 0.5 1076V0.5Z" fill="#E6E9EE" stroke="#23395E"/>
</svg>