refactor gitea configuration in a module

updated: modules/gitea to put specific configuration in the module
updated: flake.nix to import the module in nodes

hosts/n100/ollama.nix

@@ -1,6 +1,19 @@
 {inputs, ...}: {
-  virtualisation.docker = {
+  # virtualisation.docker = {
+  #   enable = true;
+  #   storageDriver = "btrfs";
+  # };
+
+  services.ollama = {
     enable = true;
-    storageDriver = "btrfs";
+    openFirewall = true;
+    loadModels = [ ];
+  };
+
+  services.open-webui = {
+    enable = true;
+    openFirewall = true;
+    host = "0.0.0.0";
+    port = 8050;
   };
 }