Add ir interpreter tests

compiler/testData/ir/interpreter/variables.kt

@@ -0,0 +1,33 @@
+@CompileTimeCalculation fun evalWithVariables(): Double {
+    val a = 1
+    val b = 1.5
+    return a + b
+}
+
+@CompileTimeCalculation fun evalWithVariablesLateinit(): Double {
+    var a: Double
+    var b: Double
+    a = 1.5
+    b = -3.75
+    return a + b
+}
+
+@CompileTimeCalculation fun evalWithValueParameter(toAdd: Int): Int {
+    var a: Int = toAdd
+    a += 10
+    a = a % 5
+    a -= 2
+    return a
+}
+
+class A @CompileTimeCalculation constructor(@CompileTimeCalculation val a: Int)
+
+@CompileTimeCalculation fun createObject(a: Int): Int {
+    val aObj = A(a)
+    return aObj.a
+}
+
+const val a = <!EVALUATED: `2.5`!>evalWithVariables()<!>
+const val b = <!EVALUATED: `-2.25`!>evalWithVariablesLateinit()<!>
+const val c = <!EVALUATED: `-2`!>evalWithValueParameter(10)<!>
+const val d = <!EVALUATED: `-2`!>createObject(c)<!>