Support all custom validation for AsyncAPI 2.x.x

[magicmatatjahu]

Chore summary

This issue contains list of rules that we need introduce in the AsyncAPI ruleset to fullfil all custom validation for 2.x.x versions.

Note: This is a collective task, which serves for cooperation and informing the community what was done and what is left to do.

Note: You can also write your own proposals/features/PRs in the comments, I will update then the main list.

Tasks

• [x] https://github.com/stoplightio/spectral/issues/1102
  • https://github.com/stoplightio/spectral/pull/2101
• [ ] https://github.com/stoplightio/spectral/issues/1103
• [x] https://github.com/stoplightio/spectral/issues/1732
• [x] https://github.com/stoplightio/spectral/issues/2102
  • https://github.com/stoplightio/spectral/pull/2121
• [x] https://github.com/stoplightio/spectral/issues/2103
  • https://github.com/stoplightio/spectral/pull/2104
• [x] https://github.com/stoplightio/spectral/issues/2123
  • https://github.com/stoplightio/spectral/pull/2122
• [x] https://github.com/stoplightio/spectral/issues/2124
  • https://github.com/stoplightio/spectral/pull/2122
• [x] https://github.com/stoplightio/spectral/issues/2223
  • https://github.com/stoplightio/spectral/pull/2224
• [ ] https://github.com/stoplightio/spectral/issues/2261
  • https://github.com/stoplightio/spectral/pull/2262
• https://github.com/stoplightio/spectral/pull/2281
• https://github.com/stoplightio/spectral/pull/2282
• https://github.com/stoplightio/spectral/pull/2284
• ...

Additional context

As the AsyncAPI team will take an active part in the development of the official ruleset for AsyncAPI we should support the validation of the overall specification.

[derberg]

we had a release where uniqueness of messageId was introduced