Add generic error catchers

src/routes/errors.rs

@@ -0,0 +1,15 @@
+use rocket_contrib::Template;
+
+#[catch(404)]
+fn not_found() -> Template {
+    Template::render("errors/404", json!({
+        "error_message": "Page not found"
+    }))
+}
+
+#[catch(500)]
+fn server_error() -> Template {
+    Template::render("errors/500", json!({
+        "error_message": "Server error"
+    }))
+}