* initial rewrite to re-use HTTP access control

* clean things up

* Update core/src/error.rs

* Update core/src/error.rs

* allow origin: add back removed Display impl

* cleanup again

* Update http-server/src/lib.rs

* Update examples/examples/cors_server.rs

* Update core/src/server/access_control/mod.rs

Co-authored-by: Tarik Gul <[email protected]>

* Update http-server/src/server.rs

Co-authored-by: Tarik Gul <[email protected]>

* fix bad comment

* remove todo

* fix grumbles

* more grumbles

* rename and document a bit

* remove `Access-Control-Allow-Origin` in whitelist

* fix nit: pub(super)

* fix bad naming

Co-authored-by: Tarik Gul <[email protected]>