Resource Limiting (#500)

* Squash post merge

* RAII claims and some comments

* Adding resources to Methods

* Use arrays for claiming all resources at once

* Register resources on ws-server

* Return MethodResourcesBuilder from register_method

* Return MethodResourcesBuilder from register_async_method

* fmt and comments

* Add `verify_and_insert` to get rid of `or_insert` in order to get mut ref to value

* Resources initialization

* No need for ResourceBuilder

* Comment all the things

* Handle errors on ws-server `start` method

* Passing ResourceGuard to method execution

* Start ws-server in background, simplify all the tests!

* Claiming resources on runtime

* Do checked math on resource claiming

* Clearer error path for resources at limit

* Resource limiting tests WIP

* Unbox async futures

* fmt

* Cleaner proc macro

* Fix lifetime issues with ResourceGuard with internal Arc

* Remove unnecessary lifetime generic

* Working tests

* Use turbofish in tests

* fmt

* Fixed (?) benches

* Apply suggestions from code review

Co-authored-by: David <[email protected]>

* Tweak more grumbles

* Adding a test for resource limiting with proc macros (WIP)

* Reworking attribute macros for resource limiting (#507)

* Squashed macros WIP

* bae-less macros!

* Make things simpler and more readable

* Some comments and DRY aliases parsing

* Naming things is hard

* Respan is no longer needed

* Simpler Arguments

* Remove stale code

* Apply suggestions from code review

Co-authored-by: Niklas Adolfsson <[email protected]>

* syn-up all the things, handle resources on methods

Co-authored-by: Niklas Adolfsson <[email protected]>

* Resource limiting on the http server

* Test two resources at once

* Test the HTTP server for resource limiting

* Apply suggestions from code review

Co-authored-by: David <[email protected]>
Co-authored-by: Niklas Adolfsson <[email protected]>

* Comment tweaks

* More explicit error type for `AttributeMeta::retain`

* Remove generic from ResourceTable; derive Default on ws Builder

* Make the macros shorter

Co-authored-by: David <[email protected]>
Co-authored-by: Niklas Adolfsson <[email protected]>