Support `NextRequest` and `NextResponse`

[kino-ma]

In Next.js's middleware (_middleware.js etc.), we use NextRequest and NextResponse as contexts. I want to pass them to nookies.get/set in the same style as others, so I added support for them in parseCookies and setCookie.

Also, I upgraded next version in dependencies so that the TypeScript compiler can refer to NextRequest and NextResponse that are newer features.

By this PR, #507 will be closed.

[yfhui]

I almost figured out the implementation myself but then I find out this pull request. Checked the commits and they look logical. I wonder when will it be merged? @maticzav

[snaerth]

It would be great to get a review on this PR? I would love to use the new _middleware feature with Nookies

[tareqlol]

Hello all, Any updates on this?, it is quite useful.

[snaerth]

@maticzav