chore: add ollama for local ai (#42)

machines/hosts/desktops/inwin-tower/configuration.nix

···
     ./hardware-configuration.nix
 
     # Include any additional apps desired
-    ../../../modules/desktop/apps/aider.nix
+    ../../../modules/desktop/apps/ollama.nix
     ../../../modules/desktop/apps/jetbrains.nix
     ../../../modules/desktop/apps/steam.nix
   ];

machines/hosts/desktops/inwin-tower/devices.nix

···
           type = "zfs_fs";
           mountpoint = "/mnt/steam";
         };
+        ollama = {
+          type = "zfs_fs";
+          mountpoint = "/mnt/ollama";
+          options.mountpoint = "legacy";
+        };
         reserved = {
           type = "zfs_fs";
           options.refreservation = "10G";

machines/modules/desktop/apps/ollama.nix

···
+{pkgs, ...}: {
+  users.users.ollama = {
+    isNormalUser = false;
+    description = "Ollama";
+  };
+  services.ollama = {
+    enable = true;
+    home = "/mnt/ollama";
+    acceleration = "cuda";
+    user = "ollama";
+  };
+}