acl: add tests

These tests test UpdatePerm correctness by parsing getfacl output.

Signed-off-by: Ophestra Umiker <cat@ophivana.moe>

.gitea/workflows/test.yml

@@ -15,6 +15,7 @@ jobs:
           echo 'deb http://deb.debian.org/debian bookworm-backports main' >> /etc/apt/sources.list.d/backports.list &&
           apt-get update &&
           apt-get install -y
+          acl
           git
           gcc
           pkg-config