Configurable array length, number values, and response conditions

[senning]

Hi there! Thanks for building this library, I'm finding it really helpful for quick prototyping. I ran into a few pain points that I had to resolve by directly changing the mock file, so I tried to fix them with this PR. There are two groups of changes, one of which is much bigger, so I kept them in separate commits in case you wanted to cherry-pick the smaller one.

support min and max values for numbers and array length

• Use the minItems and maxItems properties in array types to set the generated length of the array (replacing the default 1 - MAX_ARRAY_LENGTH)
• Use the minimum and maximum properties for number types to populate the min and max props

alt handler transformer for conditional responses

• add an option for a responseConditions file which allows specifying the conditions under which to use specific response handlers. If the file specifies handlers for a route + verb combo, it replaces the resultArray handler
• with this refactor, the default response can also be supported

To provide an example of these changes in action, I set up this repo. You can run it with these params:

./test.yml -o ./mock.js -r ./responseConditions.json --node --base-url https://test.com/

and test it with the tests in that repo.

[zoubingwu]

Thanks for your contribution! Could you please use pnpm as package manager? or just remove package-lock.json from commits

[senning]

Sure, I've removed package-lock.json and I'll use pnpm in the future. I've also rebased against the current master.

[leogallot]

Hello, is this PR planned to be merged? Thank you.