feat: add eraser tool trail (#7511)

Co-authored-by: dwelle <5153846+dwelle@users.noreply.github.com>

packages/excalidraw/components/SVGLayer.tsx

@@ -0,0 +1,33 @@
+import { useEffect, useRef } from "react";
+import { Trail } from "../animated-trail";
+
+import "./SVGLayer.scss";
+
+type SVGLayerProps = {
+  trails: Trail[];
+};
+
+export const SVGLayer = ({ trails }: SVGLayerProps) => {
+  const svgRef = useRef<SVGSVGElement | null>(null);
+
+  useEffect(() => {
+    if (svgRef.current) {
+      for (const trail of trails) {
+        trail.start(svgRef.current);
+      }
+    }
+
+    return () => {
+      for (const trail of trails) {
+        trail.stop();
+      }
+    };
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, trails);
+
+  return (
+    <div className="SVGLayer">
+      <svg ref={svgRef} />
+    </div>
+  );
+};