chore: fix netbird ssh

hosts/m3-atlas/services/netbird.nix

@@ -1,3 +1,28 @@
-{
+{pkgs, ...}: {
   services.netbird.enable = true;
+
+  systemd.services.netbird = {
+    environment = {
+      NB_DISABLE_SSH_CONFIG = "true";
+    };
+    path = [
+      pkgs.shadow
+      pkgs.util-linux
+    ];
+  };
+
+  programs.ssh.extraConfig = ''
+    Match exec "${pkgs.netbird}/bin/netbird ssh detect %h %p"
+        PreferredAuthentications password,publickey,keyboard-interactive
+        PasswordAuthentication yes
+        PubkeyAuthentication yes
+        BatchMode no
+        ProxyCommand ${pkgs.netbird}/bin/netbird ssh proxy %h %p
+        StrictHostKeyChecking no
+        UserKnownHostsFile /dev/null
+        CheckHostIP no
+        LogLevel ERROR
+  '';
+
+  networking.firewall.checkReversePath = "loose";
 }