KotlinAnnotatedElementsSearcher optimization

When possible, try to resolve references in types using only the PSI
without building the full resolve session.

idea/testData/search/annotations/testNestedPrivateAnnotationClass.kt

@@ -0,0 +1,12 @@
+package foo
+
+class A {
+    private annotation class B
+
+    class C {
+        @B
+        fun foo() {}
+    }
+}
+// ANNOTATION: foo.A.B
+// SEARCH: method:foo