fix: compile error when using enum in flutter

libs/flutter_rust_bridge_codegen/src/utils.rs

@@ -0,0 +1,26 @@
+use std::fs;
+use std::path::Path;
+
+pub fn mod_from_rust_path(code_path: &str, crate_path: &str) -> String {
+    Path::new(code_path)
+        .strip_prefix(Path::new(crate_path).join("src"))
+        .unwrap()
+        .with_extension("")
+        .into_os_string()
+        .into_string()
+        .unwrap()
+        .replace('/', "::")
+}
+
+pub fn with_changed_file<F: FnOnce() -> anyhow::Result<()>>(
+    path: &str,
+    append_content: &str,
+    f: F,
+) -> anyhow::Result<()> {
+    let content_original = fs::read_to_string(&path)?;
+    fs::write(&path, content_original.clone() + append_content)?;
+
+    f()?;
+
+    Ok(fs::write(&path, content_original)?)
+}