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

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

@@ -0,0 +1,18 @@
+// WITH_RUNTIME
+
+operator fun Int.rangeTo(right: String): ClosedRange<Int> = this..this + 1
+operator fun Long.rangeTo(right: Double): ClosedRange<Long> = this..right.toLong() + 1
+operator fun String.rangeTo(right: Int): ClosedRange<String> = this..this
+
+fun box(): String {
+    assert(0 !in 1.."a")
+    assert(1 in 1.."a")
+
+    assert(0L !in 1L..2.0)
+    assert(2L in 1L..3.0)
+
+    assert("a" !in "b"..1)
+    assert("a" in "a"..1)
+
+    return "OK"
+}