Support additional blockchains

[grctest]

Is your feature request related to a problem? Please describe.
The user cannot use Ethereum in the Beet wallet

Describe the solution you'd like
Support Ethereum & other targeted high value/credibility blockchains

Describe alternatives you've considered
Not supporting these blockchains.

Additional context
Several of the higher mcap blockchains have substantial funding/grants which we could use to continue Beet development with.

Ethereum funding options:

• https://opengrants.com/grant/0xc7258e550d58d585b85e96536540390279b81f3b
• https://esp.ethereum.foundation
• https://consensys.net/grants/

We support Steem but we don't support Hive yet. They're very similar technologically, hive being more actively supported by devs. There's a proposal system too which we could apply to: https://developers.hive.io/services/dhf.html

Ethereum classic funding options: https://www.coindesk.com/business/2022/07/26/antpool-supports-ethereum-classic-ecosystem-with-10m-investment/

Polkadot funding:
github.com/w3f/Grants-Program
https://medium.com/polkadot-news/polkadot-ecosystem-grant-programs-968d11d9c49e

[grctest]

https://www.linuxfoundation.org/press-release/linux-foundation-announces-intent-to-form-openwallet-foundation/

Perhaps the open source interoperable wallet engine they could use is Beet?

[grctest]

Looks like gitcoin could help fund continued development of beet too: https://gitcoin.co/grants/

[grctest]

There's now an open EOS grant to help fund continued BEET development: https://pomelo.io/grants/beetwallet