Add test for top level classes added from defs in nested packages

Author: nicolasstucki

tests/run-macros/annot-add-global-class.check

@@ -1,4 +1,8 @@
 macro generated main
-executed in: Bar$macro$1
+executed in: Bar$macro$3
 macro generated main
-executed in: Bar$macro$2
+executed in: Bar$macro$4
+macro generated main
+executed in: a.Bar$macro$2
+macro generated main
+executed in: a.b.Bar$macro$1

tests/run-macros/annot-add-global-class/Macro_1.scala

@@ -1,3 +1,5 @@
+package mymacro
+
 import scala.annotation.{experimental, MacroAnnotation}
 import scala.quoted._
 import scala.collection.mutable

tests/run-macros/annot-add-global-class/Test_2.scala

@@ -1,3 +1,5 @@
+import mymacro.addClass
+
 @addClass def foo(): Unit =
   println("macro generated main")
   println("executed in: " + (new Throwable().getStackTrace().head.getClassName))
@@ -17,9 +19,21 @@
 //>     println("macro generated main")
 //>     println("executed in: " + getClass.getName)
 //> }
-//> def foo(): Unit =
+//> def bar(): Unit =
 //>   new Baz$macro$2.run
 
+package a:
+  @addClass def foo(): Unit =
+    println("macro generated main")
+    println("executed in: " + (new Throwable().getStackTrace().head.getClassName))
+
+  package b:
+    @addClass def foo(): Unit =
+      println("macro generated main")
+      println("executed in: " + (new Throwable().getStackTrace().head.getClassName))
+
 @main def Test(): Unit =
   foo()
   bar()
+  a.foo()
+  a.b.foo()