feat: generate API Credentials in Admin Portal

[kiram15]

https://2u-internal.atlassian.net/browse/ENT-7335

Continuation of this branch #1018. TLDR is Yuanyuan's permissions got revoked when she left so I had to create a new PR.

For all changes

• Ensure adequate tests are in place (or reviewed existing tests cover changes)

Only if submitting a visual change

• Ensure to attach screenshots
• Ensure to have UX team confirm screenshots

[marlonkeating]

Approving per my review of the parent branch: #1018

[codecov]

Codecov Report

Patch coverage: 92.37% and project coverage change: +0.12% 🎉

Comparison is base (31f4dc8) 82.89% compared to head (9292c57) 83.01%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1027      +/-   ##
==========================================
+ Coverage   82.89%   83.01%   +0.12%     
==========================================
  Files         402      412      +10     
  Lines        8735     8850     +115     
  Branches     1805     1822      +17     
==========================================
+ Hits         7241     7347     +106     
- Misses       1455     1464       +9     
  Partials       39       39              

Files Changed	Coverage Δ
.../components/ContactCustomerSupportButton/index.jsx	100.00% <ø> (ø)
src/components/settings/SettingsLMSTab/index.jsx	95.45% <ø> (ø)
src/data/reducers/portalConfiguration.js	73.33% <ø> (ø)
src/data/services/LmsApiService.js	33.92% <12.50%> (-1.08%)	⬇️
src/components/settings/SettingsTabs.jsx	87.87% <80.00%> (-2.45%)	⬇️
.../settings/SettingsApiCredentialsTab/CopyButton.jsx	92.85% <92.85%> (ø)
src/components/settings/HelpCenterButton.jsx	100.00% <100.00%> (ø)
...s/SettingsApiCredentialsTab/APICredentialsPage.jsx	100.00% <100.00%> (ø)
...nts/settings/SettingsApiCredentialsTab/Context.jsx	100.00% <100.00%> (ø)
...settings/SettingsApiCredentialsTab/CopiedToast.jsx	100.00% <100.00%> (ø)
... and 7 more

☔ View full report in Codecov by Sentry.

📢 Have feedback on the report? Share it here.