fix: Added types for runtime config.

[sainthkh]

• Closes We need to provide types for resolved config object #14392

User facing changelog

Added types for config properties appended at runtime.

Additional details

• Why was this change necessary? => Some runtime config properties are not defined in the type file.
• What is affected by this change? => N/A

Any implementation details to explain?

I got the list of runtime config properties with the code below:

it('t', () => {
  console.log(Cypress.config())
})

And compared the list of options in server/lib/config_options.ts.

How has the user experience changed?

N/A

Questions

• I intentionally left some explanations for some properties as ??? because it's hard to guess or track the meaning of them.
• I intentionally grouped and left no explanation for internal or unlisted properties.

PR Tasks

I intentionally didn't add tests because config types are not tested in the cli tests.

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[jennifer-shehane]

I could see this also being useful to document.

[sainthkh]

@jennifer-shehane Thank you for the feedback. I applied them.