Enhance flake configuration with new modules and updates

- Added `hermes` module to integrate the Hermes agent into the flake.
- Introduced new `ai.nix` module for Ollama service configuration, enabling AI capabilities.
- Updated `flake.lock` to include new dependencies and revisions for `hermes`, `npm-lockfile-fix`, and other related packages.
- Refactored existing flake structure to improve organization and maintainability.
- Enabled `nix-ld` in the host configuration for enhanced linking capabilities.

modules/hosts/14900k/_private/ai.nix

@@ -0,0 +1,11 @@
+{config, inputs, pkgs, ...}: {
+  imports = [
+    inputs.hermes.nixosModules.default
+  ];
+  services.ollama = {
+    enable = true;
+    # Replace the old acceleration line with this:
+    package = pkgs.ollama-cuda; 
+  };
+  chiasson.users.extraModules.olivier = [{chiasson.home.extraPackages = with pkgs; [ zed-editor windsurf];}];
+}