docs(example): add example configuration

added both a home-manager and 'minimal configuration'.
They can be built and testet in this repo via:
- nixos-generate-config --dir example/default # or example/home-manager
- nix build path:./example/default#nixosConfigurations.default.config.system.build.toplevel # or path:./example/home-manager#...

the flake.lock and hardeware-configuration is ignored to prevent accidental commitment of the hardware-configuration (and get the freshes packages when somebody might use these configs as templates

flake.nix

@@ -11,6 +11,30 @@
 
   outputs = { self, nixpkgs, home-manager,... }: {
     nixosModules.default = import ./nixos95 { inherit home-manager; };
+
+    templates.default = {
+      description = "Minimal Nixos-95 configuration";
+      path = ./example/default;
+      welcomeText = ''
+        # Welcome to Nixos95
+
+        Please run `ǹixos-generate-config --dir .` to generate hardware configuration.
+
+        > You can now continue with Step 3 in the README.md
+      '';
+    };
+
+    templates.default = {
+      description = "Minimal Nixos-95 configuration with home-manager";
+      path = ./example/home-manager;
+      welcomeText = ''
+        # Welcome to Nixos95 (with home-manager)
+
+        Please run `nixos-generate-config --dir .` to generate harde configuration.
+
+        > You can now continue with Step 3 in the README.md
+      '';
+    };
   };
 }