build: decouple package deps and introduce yarn workspaces (#7415)

* feat: decouple package deps and introduce yarn workspaces

* update root directory

* fix

* fix scripts

* fix lint

* update path in scripts

* remove yarn.lock files from packages

* ignore workspace

* dummy

* dummy

* remove comment check

* revert workflow changes

* ignore ws when installing gh actions

* remove log

* update path

* fix

* fix typo

packages/excalidraw/components/LoadingMessage.tsx

@@ -0,0 +1,40 @@
+import { t } from "../i18n";
+import { useState, useEffect } from "react";
+import Spinner from "./Spinner";
+import clsx from "clsx";
+import { THEME } from "../constants";
+import { Theme } from "../element/types";
+
+export const LoadingMessage: React.FC<{ delay?: number; theme?: Theme }> = ({
+  delay,
+  theme,
+}) => {
+  const [isWaiting, setIsWaiting] = useState(!!delay);
+
+  useEffect(() => {
+    if (!delay) {
+      return;
+    }
+    const timer = setTimeout(() => {
+      setIsWaiting(false);
+    }, delay);
+    return () => clearTimeout(timer);
+  }, [delay]);
+
+  if (isWaiting) {
+    return null;
+  }
+
+  return (
+    <div
+      className={clsx("LoadingMessage", {
+        "LoadingMessage--dark": theme === THEME.DARK,
+      })}
+    >
+      <div>
+        <Spinner />
+      </div>
+      <div className="LoadingMessage-text">{t("labels.loadingScene")}</div>
+    </div>
+  );
+};