Add kotlinp, a tool to print Kotlin metadata in class/module files

At the moment, it's not published anywhere, but that may change soon

 #KT-23198

libraries/tools/kotlinp/testData/SimplePackage.txt

@@ -0,0 +1,18 @@
+// SimplePackageKt.class
+// ------------------------------------------
+package {
+
+  // signature: topLevelFun(Ljava/lang/Object;)Lkotlin/reflect/KClass;
+  internal final inline fun <reified T#0 /* X */ : kotlin/Any> topLevelFun(x: T#0): kotlin/reflect/KClass<T#0>
+
+  // field: topLevelProp:Ljava/lang/String;
+  // getter: getTopLevelProp()Ljava/lang/String;
+  // setter: setTopLevelProp(Ljava/lang/String;)V
+  public final var topLevelProp: kotlin/String?
+    public final get
+    private final /* non-default */ set(<set-?>: kotlin/String?)
+
+  public typealias F<T#0 /* T */, T#1 /* U */> = kotlin/collections/Map<T#0, kotlin/Function1<kotlin/text/StringBuilder^, T#1?>> /* = kotlin/collections/Map<T#0, kotlin/Function1<java/lang/StringBuilder /* = kotlin/text/StringBuilder^ */, T#1?>> */
+
+  public typealias G<T#0 /* S */> = F^<kotlin/collections/List<T#0>, kotlin/collections/Set<T#0>> /* = kotlin/collections/Map<kotlin/collections/List<T#0>, kotlin/Function1<java/lang/StringBuilder /* = kotlin/text/StringBuilder^ */, kotlin/collections/Set<T#0>?>> */
+}