Add test for lookups to top level declarations

Original commit: 556c755e83

jps/jps-plugin/testData/incremental/lookupTracker/packageDeclarations/foo1.kt

@@ -0,0 +1,17 @@
+package foo
+
+import bar.*
+import baz./*p:baz*/C
+
+/*p:foo*/val a = /**p:foo p:bar*/A()
+/*p:foo*/var b: /*p:foo p:bar*/baz./*p:baz*/B = /**p:foo p:bar*/baz./**p:baz*/B()
+
+/*p:foo*/fun function(p: /*p:foo p:bar*/B): /*p:foo p:bar*/B {
+    /**p:foo*/a
+    return /**p:foo p:bar*/B()
+}
+
+/*p:foo*/fun /*p:foo*/MyClass.extFunc(p: /**p:foo p:bar*//*p:foo*/Array</*p:foo p:bar*/B>, e: /*p:foo*/MyEnum, c: /**???*/C): /*p:foo*/MyInterface {
+    /**p:foo*/b
+    return /**p:foo*/MyClass()
+}