Group token QR codes

[jacbn]

Adds the option to generate a QR code from the "Invite users" modal on the groups page.

The QR library is decently large (~90kb network) so, as in the MFA page, we lazily load this when the request to generate the code is made. This means the modal takes no longer to load than before, and the QR code does not take up too much space in the modal if it has not been requested.

[codecov]

Codecov Report

❌ Patch coverage is 10.52632% with 34 lines in your changes missing coverage. Please review.
✅ Project coverage is 41.61%. Comparing base (13187ee) to head (9bb501e).
⚠️ Report is 51 commits behind head on main.

Files with missing lines	Patch %	Lines
...rc/app/components/elements/panels/GroupQRPanel.tsx	0.00%	30 Missing ⚠️
...components/elements/modals/GroupsModalCreators.tsx	50.00%	3 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1795      +/-   ##
==========================================
- Coverage   41.65%   41.61%   -0.05%     
==========================================
  Files         541      542       +1     
  Lines       23685    23726      +41     
  Branches     7835     6995     -840     
==========================================
+ Hits         9867     9873       +6     
- Misses      13178    13811     +633     
+ Partials      640       42     -598     

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