Introduced shims for LLVM StubGenerator.

Run your gradlew task with -Dshims=true to dump the trace

This is not a complete executable solution yet, but already very useful for llvm api tracing

buildSrc/src/main/groovy/org/jetbrains/kotlin/NativeInteropPlugin.groovy

@@ -191,6 +191,11 @@ class NamedNativeInteropConfig implements Named {
                 headers.files.each {
                     args "-h:$it"
                 }
+
+                if (project.hasProperty("shims")) {
+                    args  "-shims:$project.ext.shims"
+                }
+
             }
         }