Support for aurora

[rencryptofish]

Aurora has an etherscan support block explorer: https://aurorascan.dev/

I use deth heavily, would like to add aurora support for it. If it's okay can I open a PR with the suggested change? For the API key happy to let you generate one on your side.

[krzkaczor]

Feel free to create a PR adding support for this network. I can deal with generating API key on my own.