feat(headscale)!: Use nginx rather than open ports

Previously, the headscale module opened a port for you and hosted
directly on it. This was not ideal, as it avoided anything else from
being placed on the same port.

With the new nginx module, we can avoid that!

Change-Id: Id45ac9088c3f334838b7ace436bd67a4ac256650
BREAKING-CHANGE: This will close your port again, even if you are hosting on 0.0.0.0
Reviewed-on: https://git.clicks.codes/c/Infra/NixFiles/+/791
Tested-by: Skyler Grey <minion@clicks.codes>
Reviewed-by: Samuel Shuert <coded@clicks.codes>
diff --git a/systems/x86_64-linux/teal/default.nix b/systems/x86_64-linux/teal/default.nix
index 6d5ffcc..52686a8 100644
--- a/systems/x86_64-linux/teal/default.nix
+++ b/systems/x86_64-linux/teal/default.nix
@@ -41,6 +41,7 @@
       headscale = {
         enable = true;
         domain = "clicks.domains";
+        addr = lib.clicks.constants.hosts.generic;
         oidc = {
           enable = true;
           issuer = "https://login.clicks.codes/realms/master";