JS backend: add -meta-info command line option for cli compiler

compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JSCompilerArguments.java

@@ -38,6 +38,10 @@ public class K2JSCompilerArguments extends CommonCompilerArguments {
     @Argument(value = "source-map", description = "Generate source map")
     public boolean sourceMap;
 
+    @Argument(value = "meta-info", description = "Generate meta information and save to the given file")
+    @ValueDescription("<path>")
+    public String metaInfo;
+
     @Argument(value = "target", description = "Generate JS files for specific ECMA version (only ECMA 5 is supported)")
     @ValueDescription("<version>")
     public String target;