Allow delete multiaccount

[hesterbruikman]

Problem

Allow removing a multiaccount. This feature will be required to introduce moving an existing regular multiaccount to Keycard. Maintaining the multiaccount on local storage (keys on phone) would nullify the security Keycard brings.

We have also received this feature request multiple times. Although it is not entirely clear why people ask for this feature, opposed to uninstalling the app, it makes sense to want to have a sense of security by being able to remove data.

Implementation

1. Add list item in Settings > Privacy and security

• Add popover dialog for confirmation
• Remove keys and any additional data from database
• If user does not have other multiaccounts:
  Open first screen of onboarding
• If user does have other multiaccounts
  Open Your keys

2. Add remove action on Your keys

• Longpress action on list item
• Show bottom sheet Delete profile - similarly to Delete chat

Acceptance Criteria

Implementation follows design (to be added)

Notes

Future Steps

[hesterbruikman]

cc @rachelhamlin @guylouis

[guylouis]

This is needed also to be able to reset a keycard (clean it from from his secrets), since once it is cleared we need to remove the multiaccount from Status UX

See roman comment here #9229 (comment)