feat: moved ollama, tailscale, and sync into folders following the new storage pattern

modules/nixos-modules/ollama/ollama.nix

@@ -0,0 +1,32 @@
+{
+  config,
+  lib,
+  ...
+}: {
+  options = {
+    services.ollama.exposePort = lib.mkEnableOption "should we expose ollama on tailscale";
+  };
+
+  config = lib.mkIf config.services.ollama.enable (
+    lib.mkMerge [
+      {
+        services.ollama = {
+          # TODO: these should match whats set in the users file
+          group = "ollama";
+          user = "ollama";
+        };
+      }
+      (lib.mkIf config.services.ollama.exposePort (let
+        ports = [
+          config.services.ollama.port
+        ];
+      in {
+        services.ollama.host = "0.0.0.0";
+        networking.firewall.interfaces.${config.services.tailscale.interfaceName} = {
+          allowedTCPPorts = ports;
+          allowedUDPPorts = ports;
+        };
+      }))
+    ]
+  );
+}