Feature: Redesign CLI console messages and user interactions.

[amovar18]

Description

This PR aims to update the CLI messaging to provide an overall consistency to the output.

Relevant Technical Choices

• Use individual validators for each option.
• Update messaging for CLI and update flags being used.
• Use Coffee library for providing an E2E framework for CLI.

Testing Instructions

• Clone this branch.
• In the terminal run npm run build:all.
• Now run the CLI and check redesigned output messages.

Additional Information:

Screenshot/Screencast

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Checklist

• I have thoroughly tested this code to the best of my abilities.
• I have reviewed the code myself before requesting a review.
• This code is covered by unit tests to verify that it works as intended.
• The QA of this PR is done by a member of the QA team (to be checked by QA).

Fixes #625