Add webapp skeletons

matrixgw_frontend/src/widgets/RouterLink.tsx

@@ -0,0 +1,16 @@
+import { type PropsWithChildren } from "react";
+import { Link } from "react-router";
+
+export function RouterLink(
+  p: PropsWithChildren<{ to: string; target?: React.HTMLAttributeAnchorTarget }>
+): React.ReactElement {
+  return (
+    <Link
+      to={p.to}
+      target={p.target}
+      style={{ color: "inherit", textDecoration: "inherit" }}
+    >
+      {p.children}
+    </Link>
+  );
+}