fix: append trailing php extension to load() if omitted (#19)

Reviewed-on: https://codeberg.org/vlw/scaffold/pulls/19

src/Scaffold.php

@@ -18,6 +18,11 @@
 				require_once Path::root("vegvisir/src/request/VV.php");
 			}
 
+			// Append php extension if omitted
+			if (!substr($pathname, -4) === ".php") {
+				$pathname .= ".php";
+			}
+
 			require_once VV::root($pathname);
 		}
 	}