Feature : New middleware for storybook

[amaury-hanser]

We are now able to mock the api calls directly inside storybook.

[amaury-hanser]

Failing because the typescript version required by msw is higher than the one we use...

I believe this PR would resolve the issue:
mswjs/msw#985

[amaury-hanser]

Well, after some time to investigate:

We have to disable this rule in _dev/.eslintrc.js

    'no-shadow': 'off',
    '@typescript-eslint/no-shadow': ['error'],

If we don't, we have false positive for every ENUMS.

The linter will still throw an error for code using shadow variables:

var a = 3;
function b() {
    var a = 10;
}

I'm confident in this change, however it's probably something that we should discuss before merging the PR