How tiplink might be doing it

@tiplink/wallet-adapter-react-ui

https://tiplink.notion.site/Integrating-TipLink-Wallet-Adapter-4ecc4b438c244535995223a8649a1356

Interesting code - registerTipLinkWallet

import { registerTipLinkWallet } from "@tiplink/wallet-adapter";
import { TipLinkWalletAutoConnectV2 } from "@tiplink/wallet-adapter-react-ui";

// TODO: set your rpcUrl
const rpcUrl = "http://..."

// call this outside your React component
registerTipLinkWallet({
  title: "Name of Dapp",
  clientId: "694bf97c-d2ac-4dsc-a786-a001812318df",
  theme: "dark", // pick between "dark"/"light"/"system",
  rpcUrl,
});

export const Component: FC = () => {
    const { query, isReady } = useRouter();

    return (
      <WalletProvider wallets={wallets} autoConnect>
        <TipLinkWalletAutoConnectV2
          isReady={isReady}
          query={query}
        >
          ...
        </TipLinkWalletAutoConnect>
      </WalletProvider>
  );
};

https://www.npmjs.com/package/@tiplink/wallet-adapter?activeTab=code