removed legacy code and clippy fixes + fixed ci

src/output.rs

@@ -1,6 +1,6 @@
 use serde::Serialize;
 
-#[derive(Serialize)]
+#[derive(Serialize, Default)]
 pub struct WaybarOutput {
     pub text: String,
     #[serde(skip_serializing_if = "Option::is_none")]
@@ -11,17 +11,6 @@ pub struct WaybarOutput {
     pub percentage: Option<u8>,
 }
 
-impl Default for WaybarOutput {
-    fn default() -> Self {
-        Self {
-            text: String::new(),
-            tooltip: None,
-            class: None,
-            percentage: None,
-        }
-    }
-}
-
 #[cfg(test)]
 mod tests {
     use super::*;