[box-tests] Added a couple of multi-module box tests

compiler/testData/codegen/boxInline/anonymousObject/fakeOverrideMultiModule.kt

@@ -0,0 +1,18 @@
+// NO_CHECK_LAMBDA_INLINING
+// MODULE: lib
+// FILE: lib.kt
+package lib
+
+open class C {
+    fun o() = "O"
+    val k = "K"
+}
+
+inline fun inlineFun(): String {
+    val cc = object : C() {}
+    return cc.o() + cc.k
+}
+
+// MODULE: main(lib)
+// FILE: box.kt
+fun box() = lib.inlineFun()