Add Proton Pass importer

[droidmonkey]

• Closes Add Proton Pass importer #10465

We will only support unencrypted json exports since Proton Pass uses PGP for encrypted exports for some reason.
We also do not support passkey exports from Proton Pass yet.

Screenshots

Testing strategy

Added unit tests

Type of change

• ✅ New feature (change that adds functionality)

[codecov]

Codecov Report

Attention: Patch coverage is 81.42857% with 26 lines in your changes missing coverage. Please review.

Project coverage is 63.97%. Comparing base (0cb0373) to head (5cd9d73).

Files with missing lines	Patch %	Lines
src/gui/wizard/ImportWizardPageReview.cpp	33.33%	12 Missing ⚠️
src/format/ProtonPassReader.cpp	90.99%	10 Missing ⚠️
src/gui/DatabaseTabWidget.cpp	0.00%	2 Missing ⚠️
src/gui/wizard/ImportWizardPageSelect.cpp	71.43%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #11197      +/-   ##
===========================================
+ Coverage    63.88%   63.97%   +0.09%     
===========================================
  Files          362      364       +2     
  Lines        38147    38277     +130     
===========================================
+ Hits         24367    24486     +119     
- Misses       13780    13791      +11     

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