Update QrCodeGenerator for PDF use

[andreia-ferreira]

Towards #3715

(Split from #3774)
This PR expands the QrCodeGenerator in order to provide a bitmap with a centered logo. This will be used to embed a QR code in PDF exports.

The shared constants were also moved from GroundQrCode to QrCodeGenerator and unit tests were added.

@shobhitagarwal1612 PTAL?

[codecov]

Codecov Report

❌ Patch coverage is 78.26087% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 66.30%. Comparing base (b8ccfab) to head (7ab9f59).

Files with missing lines	Patch %	Lines
...roundplatform/ui/components/qrcode/GroundQrCode.kt	0.00%	5 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #3781      +/-   ##
============================================
+ Coverage     66.14%   66.30%   +0.16%     
+ Complexity     1660     1659       -1     
============================================
  Files           386      387       +1     
  Lines         10039    10059      +20     
  Branches       1288     1290       +2     
============================================
+ Hits           6640     6670      +30     
+ Misses         2722     2712      -10     
  Partials        677      677              

Files with missing lines	Coverage Δ
...rm/ui/components/qrcode/QrCodeGenerator.android.kt	100.00% <ø> (+100.00%)	⬆️
...ndplatform/ui/components/qrcode/QrCodeGenerator.kt	100.00% <100.00%> (ø)
...roundplatform/ui/components/qrcode/GroundQrCode.kt	0.00% <0.00%> (ø)

... and 1 file with indirect coverage changes

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[shobhitagarwal1612]

Looks great! Especially the test coverage!