KT-5044 implement missing Range#contains tests and move it to separate package

compiler/testData/codegen/box/ranges/contains/inOptimizableIntRange.kt

@@ -0,0 +1,26 @@
+// WITH_RUNTIME
+
+fun check(x: Int, left: Int, right: Int): Boolean {
+    val result = x in left..right
+    assert(result == checkUnoptimized(x, left..right))
+    return result
+}
+
+fun checkUnoptimized(x: Int, range: ClosedRange<Int>): Boolean {
+    return x in range
+}
+
+fun box(): String {
+    assert(check(1, 0, 2))
+    assert(!check(1, -1, 0))
+    assert(!check(239, 239, 238))
+    assert(check(239, 238, 239))
+
+    assert(check(Int.MIN_VALUE, Int.MIN_VALUE, Int.MIN_VALUE))
+    assert(check(Int.MAX_VALUE, Int.MIN_VALUE, Int.MAX_VALUE))
+
+    var value = 0
+    assert(++value in 1..1)
+    assert(++value !in 1..1)
+    return "OK"
+}