forced lang version to 10 (as ryo requested)

all libs are now packed into directory
jenkins file is back
some directives to get net48 supported too

Torch.API/Utils/IsExternalInit.cs

@@ -0,0 +1,8 @@
+#if NETFRAMEWORK
+// ReSharper disable once CheckNamespace
+namespace System.Runtime.CompilerServices;
+
+public class IsExternalInit
+{
+}
+#endif