feat(asyncapi): add v3.0.0

[lerenn]

This MR should implement the support for AsyncAPI v3.0.0.

Remaining changes to do from version 2:

• Operation, channel, and message decoupling: implemented
• Messages instead of message: issue has been created to support it, as it will take much more time to implement.
• Publish and subscribe confusion: implemented
• Request/Reply: implemented
• Optional channels: if there is no operation, then channels are not used
• Unified referencing behaviors: not supported, maybe one day
• Common metadata fields: unused metadata
• Cleaning up the root object: not used in this project
• Splitting out server URL into host and pathname: not used in this project, maybe one day
• More reusable objects in components: implemented
• New trait behavior: implemented
• Schema format and payload definition: not used here, maybe one day
• Simplified Parameters

Created issue to finish properly the support of v3:

• AsyncAPI v2 & v3: add validation on enumerations #137
• AsyncAPI v3: support default values #138
• AsyncAPI v3: support parameters setting dynamically with location #139
• AsyncAPI v3: support multiple messages #140