feat: with many producers

Signed-off-by: kjuulh <contact@kjuulh.io>

crates/crunch-traits/src/errors.rs

@@ -53,3 +53,9 @@ pub enum PersistenceError {
     #[error("failed to publish item {0}")]
     UpdatePublished(anyhow::Error),
 }
+
+#[derive(Error, Debug)]
+pub enum BuilderError {
+    #[error("dependency not added to builder: {0}")]
+    DependencyError(anyhow::Error),
+}