Ethereum backend to manage the list of wallets

[olemis]

Feature description

List Ethereum wallets

Is your feature request related to a problem? Please describe. Ethereum wallets not listed in user interface after #246

Describe the solution you'd like Wallets should be added in GUI , in a similar way to image shown below, but adapted to ETH

Describe alternatives you've considered A clear and concise description of any alternative solutions or features you've considered.

Additional context Needs #177 to render full BIP44 account and address tree . Needs #178 for fast

Possible implementation

• [ ] Implement Ethereum wallet storage
• [ ] Implement Ethereum wallet set based on previous component