Added a QR icon in Share Modal that opens to QR code on click

[merwhite11]

Closes #452

Feature: Adds a QR code icon to the share modal on books page. On icon click, a new tab opens with the QR code image. Refactor: Changed styling of Share Modal so that for small -> tablet sized screens, the share modal icons appear larger and in two rows.

Technical

Installed qrcode dependency in requirements.txt Imported qrcode and io in api.py for use in create_qrcode handler.

Testing

docker compose run --rm home make test : passing with warnings docker compose run --rm home pytest openlibrary/plugins/importapi/tests/test_import_validator.py: passing with warnings docker compose run --rm home npm run lint: passing with deprecation warnings

Screenshot

I can change the size of the icons if these are too large. I can also change the breakpoint for when to switch from large 2-row icons, to smaller single row icons. Currently I have the icons in 2 rows for everything tablet and smaller.

Stakeholders

@jimchamp Thank you for the help!

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 30 lines in your changes are missing coverage. Please review.

Project coverage is 16.11%. Comparing base (db9ead2) to head (936d6e1). Report is 141 commits behind head on master.

Files	Patch %	Lines
openlibrary/plugins/openlibrary/js/modals/index.js	0.00%	27 Missing and 3 partials :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #9233      +/-   ##
==========================================
+ Coverage   15.89%   16.11%   +0.22%     
==========================================
  Files          90       91       +1     
  Lines        4732     4785      +53     
  Branches      824      829       +5     
==========================================
+ Hits          752      771      +19     
- Misses       3468     3498      +30     
- Partials      512      516       +4     

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[merwhite11]

@jimchamp Could you review this when you get the chance? Thanks !