Document resource limiting (#510)

* Document resource limiting

* Formatting

* More formatting

* fmt

* Doc comment wording

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

* Cross-reference docs between servers and utils

* Fix grumbles

* More elaborate description

* Update http-server/Cargo.toml

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

* Apply suggestions from code review

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

* Allow for unlimited resources if cap is 0

* fmt

* Update ws-server/Cargo.toml

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

* Clarify 8 resources, 0s in costs/limits, and runtime errors

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