Multi-browser testing

[rathorevaibhav]

Fixes #596

Summary

1. TestCafe setup as our E2E testing framework
2. Replaced existing Cypress test cases with TestCafe
3. The TestCafe integrates with BrowserStack to test the Plio app workflow across various browsers
4. Right now, the Plio apps (Frontend, Backend and Analytics) are set up on an Ubuntu instance, and that app is then tested from Windows and macOS browsers via BrowserStack. Refer ci.yml file for full details.
5. Updated code structure for english and hindi specific test cases (login-en.spec.js and login-hi.spec.js). This structure can be used in all future test cases.
6. Couple of helper files to help with common functions in test cases
7. TestCafe documentation

[codecov]

Codecov Report

Merging #568 (4ad5ad8) into master (1ad35ff) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #568   +/-   ##
=======================================
  Coverage   84.18%   84.18%           
=======================================
  Files          69       69           
  Lines        4369     4369           
  Branches      769      769           
=======================================
  Hits         3678     3678           
  Misses        666      666           
  Partials       25       25           

Impacted Files	Coverage Δ
src/App.vue	61.33% <ø> (ø)

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[cypress]

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Test summary

30 • 0 • 0 • 0

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Run details

Project	Plio
Status	Passed
Commit	d9a5394
Started	Dec 21, 2021 1:37 PM
Ended	Dec 21, 2021 1:43 PM
Duration	06:41 💡
OS	Linux Ubuntu - 20.04
Browser	Multiple

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