Add ir interpreter tests

compiler/testData/ir/interpreter/extensionReceiver.kt

@@ -0,0 +1,19 @@
+@CompileTimeCalculation
+fun Int.get(): Int {
+    return this
+}
+
+@CompileTimeCalculation
+class A(val length: Int) {
+    fun String.hasRightLength(): Boolean {
+        return this@hasRightLength.length == this@A.length
+    }
+
+    fun check(string: String): Boolean {
+        return string.hasRightLength()
+    }
+}
+
+const val simple = 1.<!EVALUATED: `1`!>get()<!>
+const val right = A(3).<!EVALUATED: `true`!>check("123")<!>
+const val wrong = A(2).<!EVALUATED: `false`!>check("123")<!>