Refactoring a lot of stuff

core/http/src/handlers/handlers.rs

core/http/src/handlers/mod.rs

core/http/src/handling/file_handlers.rs

core/http/src/handling/methods.rs

core/http/src/handling/mod.rs

core/http/src/handling/request.rs

core/http/src/handling/response.rs

core/http/src/handling/routes.rs

core/http/src/lib.rs

core/http/src/setup.rs

site/404.html

site/src/main.rs

site/static/hello.css

site/static/hello.html

site/static/img.jpg

tree.txt