Add package for generating rclone docs

flake.nix

@@ -57,6 +57,26 @@
               ];
             };
           in {
+            packages = {
+              rcloneDocs =
+                let
+                  module = lib.evalModules {
+                    modules = [
+                      ({ pkgs, ... }@args: {
+                        inherit (import ./lib/modules/rclone.nix args) options;
+                      })
+                    ];
+                  };
+
+                  optionsDoc = pkgs.nixosOptionsDoc {
+                    options = module.options;
+                  };
+                in
+                  pkgs.runCommand "options-doc.md" {} ''
+                      cat ${optionsDoc.optionsCommonMark} >> $out
+                  '';
+            };
+
             devShells.default = pkgs.mkShellNoCC (
               with pkgs;
               {