Kapt: Add runtime library, move all modules inside the 'kapt3' directory

plugins/kapt3/kapt3-compiler/testData/converter/invalidFieldName.txt

@@ -0,0 +1,18 @@
+@kotlin.Metadata()
+@java.lang.annotation.Retention(value = java.lang.annotation.RetentionPolicy.RUNTIME)
+@Anno(color = Color.InvalidFieldName)
+public abstract @interface Anno {
+
+    public abstract Color color();
+}
+
+////////////////////
+
+
+@kotlin.Metadata()
+public enum Color {
+    /*public static final*/ BLACK /* = new BLACK() */;
+
+    Color() {
+    }
+}