treewide: Change to GPLv2, add LICENSES, missing headers

As discussed with Alice -- 'reuse lint' passes now.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/README.md b/README.md
index a690327..2c34362 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,9 @@
+<!---
+SPDX-License-Identifier: GPL-2.0-or-later
+Copyright (c) 2023 Red Hat GmbH
+Author: Stefano Brivio <sbrivio@redhat.com>
+-->
+
 <style>
 .markdown-body {
   display: block;