leverage omnichain features [APE-1138]

[banteg]

ape-frame/ape_frame/providers.py

Line 57 in c2c1545

"wallet_switchEthereumChain",

newer frame versions connect to all added networks, so we don't need to switch to a network to send requests.

the docs are lacking but from what i can tell, there are at least two methods available:

1. found here. we can add a chainId parameter to any request and it will be processed on the corresponding chain. this seems very simple to implement and looks like a preferred way to go.

2. found here and loosely based on caip-27. here a request is wrapped into wallet_request structure:

{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "wallet_request",
    "params": {
        "chainId": "eip155:1",
        "request": {
            "method": "eth_blockNumber",
            "params": [],
        },
    },
}

both seem to work but the first option sounds way easier. the only thing to clarify is whether frame plans to keep support for it.