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 74.63768% with 35 lines in your changes missing coverage. Please review.

Project coverage is 63.06%. Comparing base (48d0f2b) to head (cb60486).
Report is 3 commits behind head on develop.

Files with missing lines	Patch %	Lines
src/gui/wizard/ImportWizardPageReview.cpp	0.00%	17 Missing ⚠️
src/format/ProtonPassReader.cpp	90.99%	10 Missing ⚠️
src/gui/wizard/ImportWizardPageSelect.cpp	0.00%	6 Missing ⚠️
src/gui/DatabaseTabWidget.cpp	0.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #11197      +/-   ##
===========================================
+ Coverage    63.03%   63.06%   +0.03%     
===========================================
  Files          362      364       +2     
  Lines        37737    37867     +130     
===========================================
+ Hits         23786    23878      +92     
- Misses       13951    13989      +38     

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