REQUEST-3385 add timeout to prompt.ask

[miloszmat123]

Type of changes

• [ ] Bug fix
• [x] New feature
• [x] Documentation / docstrings
• [x] Tests
• [ ] Other

Checklist

• [x] I've run the latest black with default args on new code.
• [x] I've updated CHANGELOG.md and CONTRIBUTORS.md where appropriate.
• [x] I've added tests for new code.
• [x] I accept that @willmcgugan may be pedantic in the code review.

Description

Add optional argument timeout to the ask method in Prompt class.

After timeout message Prompt timed out! will be printed, and default value will be used or empty string

Issue: #3385

[BoPeng]

I would also love to have this feature.