[i1996] add test for warnings on non-existing fields

test/transform/resource/before/EqualsAndHashCodeOfAndExcludeWarn.java

@@ -0,0 +1,10 @@
+// skip-compare-contents
+@lombok.EqualsAndHashCode(of={"y"})
+final class EqualsAndHashCodeWarnOf {
+	int x;
+}
+
+@lombok.EqualsAndHashCode(exclude={"y"})
+final class EqualsAndHashCodeWarnExclude {
+	int x;
+}