Store user settings/data on the server and multi user support (#2160)

* wip per user data

* Rename, hide menu

* better error
rework default user

* store pretty

* Add userdata endpoints
Change nodetemplates to userdata

* add multi user message

* make normal arg

* Fix tests

* Ignore user dir

* user tests

* Changed to default to browser storage and add server-storage arg

* fix crash on empty templates

* fix settings added before load

* ignore parse errors

web/scripts/ui/dialog.js

@@ -0,0 +1,32 @@
+import { $el } from "../ui.js";
+
+export class ComfyDialog {
+	constructor() {
+		this.element = $el("div.comfy-modal", { parent: document.body }, [
+			$el("div.comfy-modal-content", [$el("p", { $: (p) => (this.textElement = p) }), ...this.createButtons()]),
+		]);
+	}
+
+	createButtons() {
+		return [
+			$el("button", {
+				type: "button",
+				textContent: "Close",
+				onclick: () => this.close(),
+			}),
+		];
+	}
+
+	close() {
+		this.element.style.display = "none";
+	}
+
+	show(html) {
+		if (typeof html === "string") {
+			this.textElement.innerHTML = html;
+		} else {
+			this.textElement.replaceChildren(html);
+		}
+		this.element.style.display = "flex";
+	}
+}