Restore changes from #90, "Refactor PromptUI"

[szh]

Bug report details

conjur-cli-go binary displays double prompt on windows terminal.
This may be related to prompt-ui refactor. Does not seem to impact functionality

Steps to reproduce:

• Login to Windows system
• open cmd terminal
• run conjur init command

Current Results:
results in double prompt

Expected Results:
single prompt

Desired Outcome

Windows displays single prompt

Implemented Changes

• This reverts commit cd4f278 from PR Revert "Refactor PromptUI" #95 to restore the PromptUI refactor

Connected Issue/Story

CyberArk internal issue ID: CNJR-475

Definition of Done

• Windows displays only single prompt

Changelog

• The CHANGELOG has been updated, or
• This PR does not include user-facing changes and doesn't require a
  CHANGELOG update

Test coverage

• This PR includes new unit and integration tests to go with the code
  changes, or
• The changes in this PR do not require tests

Documentation

• Docs (e.g. READMEs) were updated in this PR
• A follow-up issue to update official docs has been filed here: [insert issue ID]
• This PR does not require updating any documentation

Behavior

• This PR changes product behavior and has been reviewed by a PO, or
• These changes are part of a larger initiative that will be reviewed later, or
• No behavior was changed with this PR

Security

• Security architect has reviewed the changes in this PR,
• These changes are part of a larger initiative with a separate security review, or
• There are no security aspects to these changes

[codeclimate]

Code Climate has analyzed commit fcc14a2 and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 71.4% (50% is the threshold).

This pull request will bring the total coverage in the repository to 81.4%.

View more on Code Climate.

[gl-johnson]

Thanks for fixing up this branch! Nice workaround to address the unit test delays in the original PR. I also like that it allows us to clean up some of the utils and avoid passing the PromptDecorator func around.

I suggest we hold out for another reviewer to approve since I was heavily involved in the original PR.

[john-odonnell]

LGTM - goodbye decoratePrompt & setCommandStreamsOnPrompt!