Migrate boxInline tests to new multi-file framework

compiler/testData/codegen/boxInline/noInline/extensionReceiver.kt

@@ -0,0 +1,20 @@
+// FILE: 1.kt
+
+inline fun (() -> String).test(): (() -> String) = { invoke() + this.invoke() + this() }
+
+// call this.hashCode() guarantees that extension receiver is noinline by default
+inline fun (() -> String).extensionNoInline(): String = this() + (this.hashCode().toString())
+
+// FILE: 2.kt
+
+//NO_CHECK_LAMBDA_INLINING
+
+fun box(): String {
+    val res = { "OK" }.test()()
+    if (res != "OKOKOK") return "fail 1: $res"
+
+    val res2 = { "OK" }.extensionNoInline().subSequence(0, 2)
+    if (res2 != "OK") return "fail 2: $res2"
+
+    return "OK"
+}