OpenGov. Delegations. Revoke delegation

[pgolovkin]

• Add revoke delegation button on delegate screen if delegated already
• Revoke delegation button on multishard delegation info for single account
• Revoke delegation button on multishard delegation info for multiple selected accounts
• Confirm screen for singleshard
• Confirm screen for multishard
• Update multisig operations
• Update basket operations

[stepanLav]

Status verification: ⏳

What has been verified:

• Revoke delegate for different wallets
  • https://github.com/novasamatech/nova-spektr/issues/2331