Feat: prelude and new words

crates/project/src/project.rs

@@ -452,6 +452,8 @@ pub struct Project {
     pub tempo: f64,
     #[serde(default)]
     pub playing_patterns: Vec<(usize, usize)>,
+    #[serde(default)]
+    pub prelude: String,
 }
 
 fn default_tempo() -> f64 {
@@ -465,6 +467,7 @@ impl Default for Project {
             sample_paths: Vec::new(),
             tempo: default_tempo(),
             playing_patterns: Vec::new(),
+            prelude: String::new(),
         }
     }
 }