New J2K: add multi-file conversion tests from old j2k

nj2k/testData/multiFile/ToCompanionObject/ClassWithStatics.java

@@ -0,0 +1,22 @@
+package test;
+
+class ClassWithStatics {
+    public void instanceMethod() {
+    }
+
+    public static void staticMethod(int p) {
+    }
+
+    public static final int staticField = 1;
+    public static int staticNonFinalField = 1;
+
+    protected static int ourValue = 0;
+
+    public static int getValue() {
+        return ourValue;
+    }
+
+    public static void setValue(int value) {
+        ourValue = value;
+    }
+}