[FIR-TEST] Add new testdata generated after changes in previous commit

compiler/testData/diagnostics/tests/imports/ImportFromRootPackage.fir.kt

@@ -0,0 +1,32 @@
+// FILE: rootPackage.kt
+class Klass {
+    class Nested
+}
+
+class NotImported
+
+fun function() = ""
+
+val property = ""
+
+// FILE: anotherFromRootPackage.kt
+fun foo(): Klass {
+    function() + property
+    return Klass()
+}
+
+// FILE: anotherFromRootPackage.kt
+package pkg
+
+import Klass
+import Klass.Nested
+import function
+import property
+
+fun foo(): Klass {
+    function() + property
+    return Klass()
+}
+
+val v: Nested = Nested()
+val x: NotImported = <!UNRESOLVED_REFERENCE!>NotImported<!>()