"Find Usages": add tests for Kotlin usages of Java declarations

idea/testData/findUsages/java/findJavaClassUsages/JKClassAllUsages.results.txt

@@ -0,0 +1,18 @@
+Class/object property type (2: 15) var next: A? = A()
+Function return types (15: 20) fun getNext(): A? {
+Function return types (36: 16) fun Any.toA(): A? {
+Instantiation (2: 20) var next: A? = A()
+Instantiation (32: 18) fun X.bar(a: A = A()) {
+Local variable type (11: 17) val aa: A = a
+Parameter type (10: 16) fun foo(a: A) {
+Parameter type (32: 14) fun X.bar(a: A = A()) {
+Super type qualifier (20: 15) super<A>.foo()
+Supertype (1: 39) public class X(bar: String? = A.BAR): A() {
+Supertype (23: 19) class object: A() {
+Supertype (28: 11) object O: A() {
+Target type of 'as' operation (37: 35) return if (this is A) this as A else null
+Target type of 'is' operation (37: 24) return if (this is A) this as A else null
+Unclassified usage (1: 31) public class X(bar: String? = A.BAR): A() {
+Unclassified usage (3: 26) val myBar: String? = A.BAR
+Unclassified usage (6: 9) A.BAR = ""
+Unclassified usage (7: 9) A.foos()