Templates/default: move clan configuration into its own file

Doing this with the idea in mind, that flake-parts / default should define the same clan in clan.nix
We can add a CI check to ensure both are the same files
They got desynced in the past and describe completely different clans now

templates/clan/default/.clan-flake

@@ -1,2 +0,0 @@
-# DO NOT DELETE
-# This file is used by the clan cli to discover a clan flake

templates/clan/default/clan.nix

@@ -0,0 +1,45 @@
+{
+  # Ensure this is unique among all clans you want to use.
+  meta.name = "__CHANGE_ME__";
+
+  # Docs: See https://docs.clan.lol/reference/clanServices
+  inventory.instances = {
+
+    # Docs: https://docs.clan.lol/reference/clanServices/admin/
+    # Admin service for managing machines
+    # This service adds a root password and SSH access.
+    admin = {
+      roles.default.tags.all = { };
+      roles.default.settings.allowedKeys = {
+        # Insert the public key that you want to use for SSH access.
+        # All keys will have ssh access to all machines ("tags.all" means 'all machines').
+        # Alternatively set 'users.users.root.openssh.authorizedKeys.keys' in each machine
+        "admin-machine-1" = "__YOUR_PUBLIC_KEY__";
+      };
+    };
+
+    # Docs: https://docs.clan.lol/reference/clanServices/zerotier/
+    # The lines below will define a zerotier network and add all machines as 'peer' to it.
+    # !!! Manual steps required:
+    #   - Define a controller machine for the zerotier network.
+    #   - Deploy the controller machine first to initilize the network.
+    zerotier = {
+      # Replace with the name (string) of your machine that you will use as zerotier-controller
+      # See: https://docs.zerotier.com/controller/
+      # Deploy this machine first to create the network secrets
+      roles.controller.machines."__YOUR_CONTROLLER__" = { };
+      # Peers of the network
+      # tags.all means 'all machines' will joined
+      roles.peer.tags.all = { };
+    };
+  };
+
+  # Additional NixOS configuration can be added here.
+  # machines/machine1/configuration.nix will be automatically imported.
+  # See: https://docs.clan.lol/guides/more-machines/#automatic-registration
+  machines = {
+    # machine1 = { config, ... }: {
+    #   environment.systemPackages = [ pkgs.asciinema ];
+    # };
+  };
+}

templates/clan/default/flake.nix

@@ -8,21 +8,7 @@
       # Usage see: https://docs.clan.lol
       clan = clan-core.lib.clan {
         inherit self;
-        # Ensure this is unique among all clans you want to use.
-        meta.name = "__CHANGE_ME__";
-
-        # All machines in ./machines will be imported.
-
-        # Prerequisite: boot into the installer.
-        # See: https://docs.clan.lol/guides/getting-started/installer
-        # local> mkdir -p ./machines/machine1
-        # local> Edit ./machines/<machine>/configuration.nix to your liking.
-        machines = {
-          # You can also specify additional machines here.
-          # somemachine = {
-          #  imports = [ ./some-machine/configuration.nix ];
-          # }
-        };
+        imports = [ ./clan.nix ];
       };
     in
     {