Implement light classes for Kotlin scripts

compiler/testData/asJava/lightClasses/script/HelloWorld.java

@@ -0,0 +1,3 @@
+public class HelloWorld extends kotlin.script.templates.standard.ScriptTemplateWithArgs {
+    public HelloWorld(java.lang.String[] p) { /* compiled code */ }
+}

compiler/testData/asJava/lightClasses/script/HelloWorld.kts

@@ -0,0 +1,3 @@
+// HelloWorld
+
+println("Hello world!")

compiler/testData/asJava/lightClasses/script/InnerClasses.java

@@ -0,0 +1,22 @@
+public class InnerClasses extends kotlin.script.templates.standard.ScriptTemplateWithArgs {
+    public InnerClasses(java.lang.String[] p) { /* compiled code */ }
+
+    public static final class Bar {
+        private final int b = 0;
+        private final int a;
+
+        public final int getB() { /* compiled code */ }
+
+        public final int getAPlusB() { /* compiled code */ }
+
+        public final int getA() { /* compiled code */ }
+
+        public Bar(int a) { /* compiled code */ }
+
+        public static final class Baz {
+            public final void doSomething() { /* compiled code */ }
+
+            public Baz() { /* compiled code */ }
+        }
+    }
+}

compiler/testData/asJava/lightClasses/script/InnerClasses.kts

@@ -0,0 +1,13 @@
+// InnerClasses
+
+class Bar(val a: Int) {
+    val b: Int = 0
+
+    fun getAPlusB() = a + b
+
+    class Baz {
+        fun doSomething() {
+
+        }
+    }
+}