feat(build): #919 docs dev env

makes/docs/dev/entrypoint.sh

@@ -0,0 +1,8 @@
+# SPDX-FileCopyrightText: 2022 Fluid Attacks and Makes contributors
+#
+# SPDX-License-Identifier: MIT
+
+# shellcheck shell=bash
+
+mdbook-mermaid install docs/
+mdbook serve docs

makes/docs/dev/main.nix

@@ -0,0 +1,16 @@
+# SPDX-FileCopyrightText: 2022 Fluid Attacks and Makes contributors
+#
+# SPDX-License-Identifier: MIT
+{
+  inputs,
+  makeScript,
+  ...
+}:
+makeScript {
+  name = "docs-dev";
+  entrypoint = ./entrypoint.sh;
+  searchPaths.bin = [
+    inputs.nixpkgs.mdbook
+    inputs.nixpkgs.mdbook-mermaid
+  ];
+}