split up hopper lab configuration into multiple files

sys/machines/hopper/lab/slskd.nix

@@ -0,0 +1,31 @@
+{config, ...}: {
+  systemd.services.slskd.vpnConfinement = {
+    enable = true;
+    vpnNamespace = "wg";
+  };
+
+  services.slskd = {
+    enable = true;
+    environmentFile = config.sops.secrets.slskd.path;
+    domain = null; # why isnt this the default?
+    settings = {
+      metrics = {
+        enabled = true;
+        authentication.disabled = true;
+      };
+      remote_file_management = true;
+      shares.directories = ["/media/library/music"];
+      soulseek = {
+        listen_port = 26449;
+        description = "";
+      };
+      global = {
+        upload = {
+          slots = 50;
+          speed_limit = 10000;
+        };
+        download.speed_limit = 10000;
+      };
+    };
+  };
+}