Done some initial work

utils.go

@@ -0,0 +1,17 @@
+package autotrader
+
+import "golang.org/x/exp/constraints"
+
+func Min[T constraints.Ordered](a, b T) T {
+	if a < b {
+		return a
+	}
+	return b
+}
+
+func Max[T constraints.Ordered](a, b T) T {
+	if a > b {
+		return a
+	}
+	return b
+}