[FIR-TEST] Move analysis tests to separate module

compiler/fir/analysis-tests/testData/resolve/multifile/simpleImportNested.kt

@@ -0,0 +1,15 @@
+// FILE: A.kt
+
+package a
+
+class MyClass {
+    open class MyNested
+}
+
+// FILE: B.kt
+
+package b
+
+import a.MyClass.MyNested
+
+class YourClass : MyNested()