feat(docs): add use-cases for popover component

[ludmilanesvitiy]

PR Checklist

Before creating new PR, please take a look at checklist below to make sure that you've done everything that needs to be done before we can merge it.

• read and followed the CONTRIBUTING.md guide.
• built and tested the changes locally.
• added/updated tests.
• added/updated API documentation.
• added/updated demos.

[codecov]

Codecov Report

Merging #4740 into development will not change coverage.
The diff coverage is n/a.

@@             Coverage Diff              @@
##           development    #4740   +/-   ##
============================================
  Coverage        74.34%   74.34%           
============================================
  Files              202      202           
  Lines             7102     7102           
  Branches          1447     1447           
============================================
  Hits              5280     5280           
  Misses            1426     1426           
  Partials           396      396

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update b51c21f...78c1843. Read the comment docs.