Add input to adjust the zoom level for the page(s) to be scanned

[katydecorah]

Is your feature request related to a problem? Please describe.

A user is interested in being able to increase the zoom level (400%) of their site during scan to help find issues at reflow.

Describe the desired outcome

A new input that would allow the user to define the zoom level that the action would then pass to ai-scan.

Describe alternatives you've considered

Additional context

It could also be helpful to investigate parameterizing the viewport height and width so that the user can also specify breakpoints that the scan should use.

Prior art: puppeteer/puppeteer#4419

[ghost]

This issue has been marked as ready for team triage; we will triage it in our weekly review and update the issue. Thank you for contributing to Accessibility Insights!

[ghost]

This issue has been marked as ready for team triage; we will triage it in our weekly review and update the issue. Thank you for contributing to Accessibility Insights!