解决dll中异常没有行号的问题

Unity/Directory.Build.props

@@ -2,5 +2,6 @@
   <PropertyGroup>
     <LangVersion>11.0</LangVersion>
     <NoWarn>0169,0649,3021,8981</NoWarn>
+    <DebugType>Portable</DebugType>
   </PropertyGroup>
 </Project>