Add the auto-generated node catalog to the website's user manual (#3662)

* Generate the MVP node catalog in the manual (with some placeholders)

* Implement nearly the rest of everything

* Move to the tools directory and make it generate nicer default values

* Add category descriptions

* Organize file structure and improve type naming

* Improve book table of contents code

* Add collapsing chapter navigation to the book template

* Add to build workflow

* Clean up site structure

website/sass/page/user-manual/node.scss

@@ -0,0 +1,14 @@
+:is(#context, #inputs, #outputs) + table tr {
+	th:is(:first-child, :nth-child(3)) {
+		width: 0;
+		white-space: nowrap;
+	}
+
+	td:is(:first-child, :nth-child(3)) {
+		width: 0;
+
+		code {
+			white-space: nowrap;
+		}
+	}
+}