Add Native Binance Smart Chain Support to Tally Ho

[0xDaedalus]

Requirements

• Send / Receive Assets
• Swaps
• Gas Price Preview
• Dapp connection / tx signing
• Ledger Support
• Coming Soon page for Gas Price Adjust
• If [Proposal] - Prefer generic RPC providers when possible. #2547 or similar has been merged - preference for a generic rpc provider.
• Assets showing up in Overview
• ENS Name Resolution
• Ensure support for popular dapps (cc @mr-michael @alsoknownaslj @Naxsun to provide list in a separate issue).

Stretch Goals

• Gas Price Adjust (cc @VladUXUI do we have an updated design for a simple gas price + gas limit gas adjustment screen? This is basically pre-EIP 1559 adjustment)
• NFT Support (If we can find a free api)

Useful References

• https://github.com/tallycash/extension/pull/2287/files
• https://github.com/tallycash/extension/pull/1347/files

Notes

• Support for NFTs is not a hard requirement.
• I expect we'll want to open multiple PRs to ultimately close out this ticket - trying to tackle this in one PR might result in a large amount of code to review.
• PRs and issues open for avalanche-specific bugs encountered while implementing avalanche support should be added to the Binance Smart Chain Support milestone.

[kkosiorowska]

Ledger is working only for the ETH app for now. BSC support for Ledger should be added when this PR will be merged.