Add Recovery section in the new user settings Encryption tab

[florianduros]

Checklist

• Tests written for new code (and old code if feasible).
• New or updated public/exported symbols have accurate TSDoc documentation.
• Linter and other CI checks pass.
• I have licensed the changes to Element by completing the Contributor License Agreement (CLA)

Task #26468
Add a new encryption tab with a new recovery section.

Implemented

The encryption tab has the following behaviour:

• If the device is not verified, a button to launch the verification button is displayed. Only this button and his description is displayed. The user must verify his device before playing with the encryption settings.
• Otherwise, display the Recovery section (the Key storage and Advanced section in the future)
• If the user want to set up or change the recovery key when clicking on the corresponding button of the recovery section, the content of the encryption tab is replaced by breadcrumb to do it.

The recovery section has the following behaviour:

• If the key backup is not setup, we ask to setup a recovery key
• If the secrets (cross-signing keys) are not cached locally, we ask to enter the recovery key
• Otherwise, display the "change recovery key" button

Not implemented

This PR DON'T (because the PR is already massive and theses tasks should be done in other PRs):

• Implement the "Key storage is out of sync" toast
• Implement the new "Enter your recovery key" dialog and the "Forgot your recovery key? You’ll need to reset your identity." dialog
• Add dot to the User settings tab