Added captcha to booking form. Deleted useless files.

src/backend/user.rs

@@ -306,4 +306,11 @@ pub async fn delete_user(id: i32) -> Result<ApiResponse<()>, ServerFnError> {
     info!("User deleted");
 
     Ok(ApiResponse::Data(()))
+}
+
+#[server]
+pub async fn get_pow() -> Result<String, ServerFnError> {
+    use leptos_captcha::spow::pow::Pow;
+
+    Ok(Pow::new(10)?.to_string())
 }