Add balance check

[michielderoos]

Describe the Pull Request

Adds working card balance check functionality

Todo

• Link relevant trello card or related issue to the pull request
• Request review from relevant @person or team
• QA your pull request. This includes running the app, login, testing changes, accessibility etc.
• Bump package and android versions following Semver
• Add release notes to unreleased changelog

[codecov]

Codecov Report

Merging #19 (6860032) into main (550fd39) will decrease coverage by 0.25%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main      #19      +/-   ##
==========================================
- Coverage   25.26%   25.01%   -0.26%     
==========================================
  Files         155      156       +1     
  Lines        5283     5336      +53     
  Branches     1157     1163       +6     
==========================================
  Hits         1335     1335              
- Misses       3483     3529      +46     
- Partials      465      472       +7     

Flag	Coverage Δ
javascript	25.01% <0.00%> (-0.26%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/api/nfcAPI.js	0.00% <0.00%> (ø)
src/components/PaymentModeSwitcher.js	45.16% <ø> (ø)
src/components/PaymentSwitch.js	0.00% <0.00%> (ø)
...mponents/SendPaymentFlow/CheckCardBalanceScreen.js	0.00% <0.00%> (ø)
...mponents/SendPaymentFlow/DisplayBalanceNotifier.js	0.00% <0.00%> (ø)

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[michielderoos]

Check balance flow