Revert "remove debug and provide value for stylus"

This reverts commit c72c47f0cd.

# Conflicts:
#	packages/element/src/freedraw.ts
#	packages/excalidraw/tests/__snapshots__/history.test.tsx.snap
#	packages/excalidraw/tests/__snapshots__/regressionTests.test.tsx.snap

excalidraw-app/App.tsx

@@ -134,6 +134,7 @@ import DebugCanvas, {
 } from "./components/DebugCanvas";
 import { AIComponents } from "./components/AI";
 import { ExcalidrawPlusIframeExport } from "./ExcalidrawPlusIframeExport";
+import { FreedrawDebugSliders } from "./components/FreedrawDebugSliders";
 
 import "./index.scss";
 
@@ -1142,6 +1143,7 @@ const ExcalidrawWrapper = () => {
             ref={debugCanvasRef}
           />
         )}
+        <FreedrawDebugSliders />
       </Excalidraw>
     </div>
   );