Use ethers eip 1193 bridge

[BlinkyStitt]

const provider = new JsonRpcProvider("https://ethereum.llamarpc.com");

const bridge = new Eip1193Bridge(provider.getSigner(), provider);

window.ethereum = bridge;

[BlinkyStitt]

This was experimental in v5, but was removed in v6. So maybe just use it as an example.

ethers-io/ethers.js#3823 (comment)