feat: support runtime delay functions

[huwshimi]

Status

READY

Description

Add support for generating mock delay times at runtime.

Fixes: #1279

Todos

• Tests
• Documentation
• Changelog Entry (unreleased)

Steps to Test or Reproduce

1. In root run yarn build.
2. cd samples/react-query/basic.
3. Open orval.config.ts and replace mock: true, with:

      mock: {
        type: 'msw',
        delay: () => (process.env.NODE_ENV === 'test' ? 10 : 1000),
        delayCalcRuntime: true,
      },

4. Run yarn generate-api.
5. Open src/api/endpoints/petstoreFromFileSpecWithTransformer.msw.ts.
6. See that the delays are now await delay((() => (process.env.NODE_ENV === 'test' ? 10 : 1e3))());

[soartec-lab]

Thank you for made this PR. I'll review it.

[soartec-lab]

@huwshimi

Thank you for your great work. I have made some comments, please check them.

[soartec-lab]

Thanks!

[soartec-lab]

@melloware
I think it's good, but could you review it again?