add license info to build.rs

build.rs

@@ -1,3 +1,6 @@
+// Copyright (c) 2022 silt <silt@tebibyte.media>
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
 use std::env;
 use std::process::{Command, exit};
 
@@ -44,4 +47,4 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
 	handler_ld_false.wait();
 
 	Ok(())
-}
+}