fix: we weren't including the name unused var warning

CHANGELOG.md

@@ -9,6 +9,10 @@
 
 ### Fixed
 
+- **aiken-lang**: Add name of var to the unused var warning
+
+### Fixed
+
 - **aiken**: fixed 'new' instructions to properly show project name and folder
 
 ## v1.0.2.alpha - 2023-04-17

crates/aiken-lang/src/tipo/error.rs

@@ -1376,7 +1376,10 @@ pub enum Warning {
         name: String,
     },
 
-    #[error("I came across an unused variable.\n")]
+    #[error(
+        "I came across an unused variable: {}.\n",
+        name.if_supports_color(Stderr, |s| s.purple())
+    )]
     #[diagnostic(help("{}", formatdoc! {
         r#"No big deal, but you might want to remove it to get rid of that warning.