[FEATURE REQUEST] Override handleSIGINT in puppeteer

[imlinder]

Is your feature request related to a problem? Please describe.
When running timecut, the SIGINT event stops working as expected. Puppeteer has a launchoption to not handle SIGINT (defaults to closing the browser process): https://pptr.dev/api/puppeteer.launchoptions.handlesigint.
This fix will be useful if you want to be able to make sure a capture completes before terminating the process, or doing other cleanups.

Describe the solution you'd like
Timesnap could forward config.handleSIGINT to puppeteer launchOptions: 4b4be5d