Refactor cookie store handling into a middleware

[seanmonstar]

There's some code duplication for storing cookies internally, it would be good to clean it up into a single place as a service middleware that both the hyper client and the h3 client can share.

[Lori-Shu]

I noticed that a h3 client takes a cookie_store when calling new(),default async client creates a Jar as a cookie_store,do you mean extracting those lines to a function or adding a completely new struct to perform both "store" and "manage" for all cookies from all urls? @seanmonstar

[Lori-Shu]

I noticed that a h3 client takes a cookie_store when calling new(),default async client creates a Jar as a cookie_store,do you mean extracting those lines to a function or adding a completely new struct to perform both "store" and "manage" for all cookies from all urls? @seanmonstar

my solution to the latter #2701

[edilson258]

can i work on this??