[SAM with receiver] Prepare module structure to K2 implementation

plugins/sam-with-receiver/testData/diagnostics/samConversionSimpleWithoutAnnotation.kt

@@ -0,0 +1,19 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER,-UNUSED_VARIABLE
+
+// FILE: Sam.java
+public interface Sam {
+    void run(String a);
+}
+
+// FILE: Exec.java
+public class Exec {
+    void exec(Sam sam) {}
+}
+
+// FILE: test.kt
+fun test() {
+    val e = Exec()
+
+    e.exec { a -> System.out.println(a) }
+    e.exec { System.out.println(<!NO_THIS!>this<!>) }
+}