[libgweather/ebassi/gtk4] Rename HACKING to CONTRIBUTING

[Emmanuele Bassi <ebassi src gnome org>]

commit 15c5553548bfd30ce6cfd2b8e0259176253b6073
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Mon Oct 11 14:43:04 2021 +0100

    Rename HACKING to CONTRIBUTING
    
    This way, GitLab will pick up the file and link to it in the project
    page.

 HACKING.md => CONTRIBUTING.md | 0
 1 file changed, 0 insertions(+), 0 deletions(-)
---
diff --git a/HACKING.md b/CONTRIBUTING.md
similarity index 100%
rename from HACKING.md
rename to CONTRIBUTING.md