Bitcoin - Import addresses or private keys

[olemis]

Feature description

Bitcoin collection wallets

Is your feature request related to a problem? Please describe. Wallet does not support Bitcoin collection wallets

Describe the solution you'd like Usability similar to Electrum

Describe alternatives you've considered There are many crypto wallets out there , but Electrum excels to be considered the right target.

Additional context

TODO: Find a golang library for Bitcoin Requires #208

Possible implementation

• [ ] Create Bitcoin collection wallets (backend)
• [ ] Create Bitcoin collection wallets (GUI)
• [ ] List Bitcoin collection wallets
• [ ] Encrypt / decrypt files for collection Bitcoin wallet
• [ ] Implement core.Wallet interface
• [ ] Implement core.Signer interface