Deprecate modules of the empty artifacts to discourage their usage

#KT-51907

libraries/stdlib/jdk8/java9/module-info.java

@@ -1,4 +1,8 @@
+/**
+ * @deprecated This module is empty and therefore deprecated, please use <code>kotlin.stdlib</code> instead.
+ */
 @SuppressWarnings("module") // suppress warning about terminal digit
+@Deprecated
 module kotlin.stdlib.jdk8 {
     requires transitive kotlin.stdlib;
     requires kotlin.stdlib.jdk7;