Merge pull request 'Use iwd as wifi backend' (#122) from feature/use-iwd-as-networkmanager-wifi-backend into main

Reviewed-on: https://git.b12f.io/pub-solar/os/pulls/122
Reviewed-by: Benjamin Bädorf <hello@benjaminbaedorf.eu>

modules/core/networking.nix

@@ -26,6 +26,7 @@ in
     networking.networkmanager = {
       # Enable networkmanager. REMEMBER to add yourself to group in order to use nm related stuff.
       enable = true;
+      wifi.backend = "iwd";
     };
 
     # Customized binary caches list (with fallback to official binary cache)