Load user's tsconfig.json

[chrisbreiding]

When typescript support is enabled, we should load the user's tsconfig.json and only override the options we need to for things to run smoothly. We should try to auto-load it from the project root, but also accept an option for a custom path to it.

[kylemh]

This would be very helpful to avoid the need to imperatively integrate @cypress/webpack-preprocessor for path aliases

[Viktor-Bredihin]

I have the same problem, is there any workaround?