feat/ support of AES-256-CBC for the encryption

[b00f]

Description

This PR adds support for AES-256-CBC. For backward compatibility, the default encryption remains AES-256-CTR.
Some tests have been added to ensure that upgrading the wallet to version 3 is safe.

[codecov]

Codecov Report

Attention: Patch coverage is 90.60403% with 14 lines in your changes missing coverage. Please review.

Project coverage is 76.39%. Comparing base (86a8ba9) to head (8b48d11).
Report is 57 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1706      +/-   ##
==========================================
+ Coverage   75.07%   76.39%   +1.32%     
==========================================
  Files         234      242       +8     
  Lines       12156    18708    +6552     
==========================================
+ Hits         9126    14292    +5166     
- Misses       2582     3954    +1372     
- Partials      448      462      +14     

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