fix: don't render spinner in non-TTY terminal

[sobolk]

Description of changes

This PR makes Spinner noop in non-TTY terminals.

Customers who spawn CLI process as child process or stream logs to files observe control characters and transitions in output. These are not needed in these scenarios and only obscure output.

Issue #, if available

Description of how you validated changes

1. Added unit tests
2. Ran full e2e suite.
3. Manual checks
   1. Stream to logs withouth fix
   2. Stream to logs with fix
   3. push in TTY terminal to validate spinner is rendering

Before change - log to file

After change - log to file

TTY
(see spinner next to "This will take few minutes", the other is harder to catch as it uploads faster).

Checklist

• PR description included
• yarn test passes
• Tests are changed or added
• Relevant documentation is changed or added (and PR referenced)
• New AWS SDK calls or CloudFormation actions have been added to relevant test and service IAM policies
• Pull request labels are added

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.