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

setupTests.ts

@@ -0,0 +1,23 @@
+// vitest.setup.ts
+import "vitest-canvas-mock";
+import "@testing-library/jest-dom";
+import { vi } from "vitest";
+import polyfill from "./packages/excalidraw/polyfill";
+import { testPolyfills } from "./packages/excalidraw/tests/helpers/polyfills";
+
+Object.assign(globalThis, testPolyfills);
+
+require("fake-indexeddb/auto");
+
+polyfill();
+
+vi.mock("nanoid", () => {
+  return {
+    nanoid: vi.fn(() => "test-id"),
+  };
+});
+// ReactDOM is located inside index.tsx file
+// as a result, we need a place for it to render into
+const element = document.createElement("div");
+element.id = "root";
+document.body.appendChild(element);