Feat: update HTTP refs in protocol (#561)

* feat: add refs to RFC9110/9111/9112/9113

* feat: update HTTP ref in definition of resource

* feat: update HTTP refs in definition of product classes

* feat: update HTTP refs in general client & server conformance

* feat: remove RFC7232/7233/7235 from client & server conformance

* feat: updated HTTP caching refs in client & server conformance

* feat: update HTTP method ref in client-content-type

* feat: update HTTP refs in security considerations

* feat: update HTTP refs in accept-put syntax

* fix: correct invalid use of list syntax

* feat: update HTTP refs in CORS section

* feat: update HTTP refs in sections on reading/writing resources

* feat: update HTTP refs in section on deleting resources

* fix: correct typo

* feat: update reference for header field registration

* feat: remove RFC3864/7230/7231/7232/7233/7234/7235/7540 from ref list

* fix: adapt references to W3C style

* fix: remove inserted 'at least'

Co-authored-by: Sarven Capadisli <[email protected]>

* feat: replace 'payload' with 'content' as per RFC9110

* feat: replace 'effecive resource URI' with 'target URI' as per RFC9110

* fix: update section and remove redundant clarification

* fix: resolve ambiguity in requirement id

Co-authored-by: Sarven Capadisli <[email protected]>

* fix: align similar requirement ids

* fix: correct punctuation

Co-authored-by: Ted Thibodeau Jr <[email protected]>

---------

Co-authored-by: Sarven Capadisli <[email protected]>
Co-authored-by: Ted Thibodeau Jr <[email protected]>