ink::test attributes in new template (use-ink#190)

* ink::test attributes in new template

* add use ink

* Update templates/new/lib.rs

Co-authored-by: Michael Müller <mich@elmueller.net>

Co-authored-by: Michael Müller <mich@elmueller.net>

templates/new/lib.rs

@@ -52,15 +52,18 @@ mod {{name}} {
         /// Imports all the definitions from the outer scope so we can use them here.
         use super::*;
 
+        /// Imports `ink_lang` so we can use `#[ink::test]`.
+        use ink_lang as ink;
+
         /// We test if the default constructor does its job.
-        #[test]
+        #[ink::test]
         fn default_works() {
             let {{name}} = {{camel_name}}::default();
             assert_eq!({{name}}.get(), false);
         }
 
         /// We test a simple use case of our contract.
-        #[test]
+        #[ink::test]
         fn it_works() {
             let mut {{name}} = {{camel_name}}::new(false);
             assert_eq!({{name}}.get(), false);