add Odin lang

odin/tests/gilded_rose_test.odin

@@ -0,0 +1,11 @@
+package test_gilded_rose
+
+import GildedRose "../gilded_rose"
+import "core:testing"
+
+@(test)
+update_quality_test :: proc(t: ^testing.T) {
+	items := []GildedRose.Item{{"food", 0, 0}}
+	GildedRose.update_quality(items)
+	testing.expect(t, "fixme" == items[0].name, "Fix this test")
+}