feat: add examdetails box

src/style/tcb.sty

@@ -48,3 +48,14 @@
 
 % Simple
 \newtcolorbox{simplebox}[2][]{colback=#2!5!white,colframe=#2!75!black,#1}
+
+% Exam details
+\newtcolorbox{examdetailsbox}[1][]{colback=BurntOrange!20!white,
+    width=0.5\linewidth,boxrule=0.1mm,arc=0.5mm,boxsep=1mm,left=0mm,right=0mm,top=0mm,bottom=0mm,#1}
+
+\newenvironment{examdetails}{%
+    \begin{examdetailsbox}[]
+        \textbf{At exam:}%
+        }{%
+    \end{examdetailsbox}%
+}