refactor: moved nixos modules to dendrite pattern

modules/nixos/storage/impermanence-dataset.nix

@@ -0,0 +1,60 @@
+{config, ...}: let
+  datasetSubmodule = config.flake.commonModules.storage-dataset-submodule;
+  submodule = args @ {lib, ...}: {name, ...}: let
+    pathPermissions = {
+      read = lib.mkEnableOption "should the path have read permissions";
+      write = lib.mkEnableOption "should the path have read permissions";
+      execute = lib.mkEnableOption "should the path have read permissions";
+    };
+    pathTypeSubmodule = {name, ...}: {
+      options = {
+        enable = lib.mkOption {
+          type = lib.types.bool;
+          default = true;
+        };
+        owner = {
+          name = lib.mkOption {
+            type = lib.types.str;
+            default = "root";
+          };
+          permissions = pathPermissions;
+        };
+        group = {
+          name = lib.mkOption {
+            type = lib.types.str;
+            default = "root";
+          };
+          permissions = pathPermissions;
+        };
+        other = {
+          permissions = pathPermissions;
+        };
+      };
+    };
+  in {
+    imports = [
+      (datasetSubmodule args)
+    ];
+
+    options = {
+      files = lib.mkOption {
+        type = lib.types.attrsOf (lib.types.submodule pathTypeSubmodule);
+        default = {};
+      };
+      directories = lib.mkOption {
+        type = lib.types.attrsOf (lib.types.submodule pathTypeSubmodule);
+        default = {};
+      };
+      impermanence.enable = lib.mkOption {
+        type = lib.types.bool;
+        default = true;
+      };
+    };
+
+    config = {
+      mount = lib.mkDefault "/${name}";
+    };
+  };
+in {
+  flake.commonModules.storage-impermanence-dataset-submodule = submodule;
+}