feat: Implemented Basic Auth scheme

[sarabala1979]

Checklist:

• Either (a) I've created an enhancement proposal and discussed it with the community, (b) this is a bug fix, or (c) this is a chore.
• The title of the PR is (a) conventional, (b) states what changed, and (c) suffixes the related issues number. E.g. "fix(controller): Updates such and such. Fixes #1234". Support basic Authentication in Argo CLI to API Server #2020
• I have written unit and/or e2e tests for my change. PRs without these are unlike to be merged.
• Optional. I've added My organization is added to the README.
• I've signed the CLA and required builds are green.

[alexec]

@sarabala1979 let me know when you want me to review this.

[codecov]

Codecov Report

Merging #2093 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master   #2093   +/-   ##
======================================
  Coverage    9.02%   9.02%           
======================================
  Files          61      61           
  Lines       34645   34645           
======================================
  Hits         3127    3127           
  Misses      31124   31124           
  Partials      394     394

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[sarabala1979]

@alexec can you review it?

[alexec]

One query about an if/else in a test.