Add navi deployment module and integrate SSH inventory for remote management

- Introduced a new `navi` module for managing deployments across multiple hosts.
- Enhanced SSH inventory management to support public key application for authorized hosts.
- Configured system deployment builder for seamless integration with Navi.
- Updated various host configurations to enable deployment capabilities and streamline SSH access.

modules/hosts/nix-server/configuration.nix

@@ -10,6 +10,7 @@
     {
       imports = [
         inputs.ddrm.nixosModules.default
+        self.nixosModules.systemDeployBuilder
         self.nixosModules.nix-serverHardware
         inputs.sops-nix.nixosModules.sops
         self.nixosModules.system
@@ -83,6 +84,8 @@
         extraPackages = with pkgs; [ btop ];
       };
 
+      chiasson.system.deploy.builder.enable = true;
+
       chiasson.users = {
         enabled = [ "server" ];
         hostOverrides.server = {