[LC] merge ultraLightFacades tests to lightClassByPsi

compiler/testData/asJava/lightClasses/lightClassByPsi/facades/multifileFacade.lib.java

@@ -0,0 +1,8 @@
+public final class multifileFacade /* multifileFacade*/ {
+  public static final int x1 = 42 /* initializer type: int */ /* constant value 42 */;
+
+  public static final int foo();//  foo()
+
+  public static final int getX();//  getX()
+
+}