feat(serial):基本完成UUID和Short UUID的生成功能。

tests/serial_codes.rs

@@ -0,0 +1,20 @@
+#[cfg(test)]
+mod uuid_test {
+    #[test]
+    fn gen_uuid() {
+        let uuid = rs_toolbox::serial_code::uuid::new();
+        println!("{}", uuid);
+    }
+}
+
+#[cfg(test)]
+mod short_uuid_test {
+    #[test]
+    fn gen_short() {
+        let short_uuid = rs_toolbox::serial_code::short_uuid::new(10);
+        println!("{}", short_uuid);
+        if short_uuid.len() != 10 {
+            panic!("short_uuid length is not enough");
+        }
+    }
+}