feat: Add reveal button to password textbox #1977

The PR fulfills these requirements: (check all the apply)

[x] It's submitted to the main branch.
[x] When resolving a specific issue, it's referenced in the PR's title (e.g. feat: Add a button #xxx, where "xxx" is the issue number).
[x] When resolving a specific issue, the PR description includes Closes #xxx, where "xxx" is the issue number.
[x] If changes were made to ui folder, unit tests (make test) still pass.
[x] New/updated tests are included

Updated API description for password prop:

  /** True if the text box should hide text content unless it is revealed by the eye icon. */
  password?: B

Closes #1977

h2oai / wave