Allopen: Handle allopen annotations on classes (KT-12149)

plugins/allopen/testData/bytecodeListing/superClassAnnotation.kt

@@ -0,0 +1,28 @@
+annotation class AllOpen
+
+@AllOpen
+abstract class Base_ShouldBeOpen {
+    fun baseMethod() {}
+}
+
+open class BaseImpl : Base_ShouldBeOpen() {
+    fun baseImplMethod_ShouldBeOpen() {}
+}
+
+class BaseImpl2_ShouldBeOpen : BaseImpl() {
+    fun baseImpl2Method_ShouldBeOpen() {}
+    val baseImpl2Property_ShouldBeOpen = ""
+}
+
+@AllOpen
+interface Intf {
+    fun intfMethod() {}
+}
+
+open class IntfImpl : Intf {
+    fun intfImplMethod_ShouldBeFinal() {}
+}
+
+class IntfImpl2_ShouldBeFinalBecauseIntfIsAnInterface : IntfImpl() {
+    fun intfImpl2Method_ShouldBeFinal() {}
+}