request_form_utils

many errors WIP

build

possibility, divide the response module;

the whole data of the content-type

`extract_cookies_from_vec()`. Update `mime_from_headers()` to take a
mutable reference to self

seprate impl's, fixing some code, ...

add cookie functionality

Added TODO: file

set maximum post body size to 4196 bytes

TODO: Add '\n' detector in thing

Applicacation-x-www-urlencoded forms

Result<&str, ParseFormError>>, ParseFormError> for easier handling of
not existant keys

add a get request with form

removing `unwraps()` and replacing them with propper error handling
remove unnecessary `clone()` calls