[FEATURE] Add a view button for password input text-box

[DarshitChanpura]

We should add a View button to password input field. This would allow users to peek at their typed password.
Something like:

The view button can be implemented as 1 of the 2 following behaviors:

1. Password is only visible when holding the view button down.
2. View button acts as a toggle between displaying password in plain-text and masking it.

[derek-ho]

Looks like this can help: https://oui.opensearch.org/1.0/#/forms/form-controls#password-field

[cwperks]

[Triage] Thank you for the feature request @DarshitChanpura. Does OUI currently support a reveal button?

[DarshitChanpura]

Yes, however OUI comes with its own set of web-pack compilation failures. We'll probly have to address those along-with this fix, if we plan to use the OUI component.