export integrated cookie functionality

[Uzlopak]

This way we can use it in fastify/secure-session and co instead of the cookie package.

Checklist

• run npm run test and npm run benchmark
• tests and/or benchmarks are included
• documentation is changed or added
• commit message and code follows the Developer's Certification of Origin
  and the Code of conduct

[gurgunday]

Great, thanks

[Uzlopak]

@mcollina PTAL

[mcollina]

Plase require the entrypoint file in

fastify-cookie/test/cookie-module.test.js

Line 6 in efea671

const cookie = require('../cookie')

.

[jsumners]

If the other module is going to use @fastify/cookie to manage cookies, why do we need to export the underlying tooling?

[Uzlopak]

@mcollina
PTAL

[mcollina]

Can you document it in the README?

[Fdawgs]

Maybe add a link here to the header section regarding the import?

[Uzlopak]

@mcollina PTAL

@gurgunday
Thank you for your work.

[mcollina]

lgtm