docs: add content for module 4

[mhmohona]

---

Module 4: Creating and Validating AsyncAPI Documents

Reaction: With the spaceship fixed, Eve looks forward to testing communication with Chan.

• Writing and documenting AsyncAPI code from scratch.
• Utilizing AsyncAPI tools for document validation.
• Hands-on exercises for creating and validating AsyncAPI documents.

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Related issue(s)
asyncapi/website#1520

[alequetzalli]

Hey folks, so please update your planet names to:

• Eve's planet: Capuccinova
• Chan's planet: Brownieterra

[derberg]

just one comment

to be honest killercoda tutorials is hard to review as there is no preview

I think technically accurate except of one comment I left

on to you @alequetzalli

[smoya]

@mhmohona I would like to get a clarified description of what this module wants to show because I don't see just a different approach on https://github.com/asyncapi/learning-paths/pull/9/files#r1494514714.

For example, it says nothing about generating code.

cc @alequetzalli

[alequetzalli]

...I would like to get a clarified description of what this module wants to show because I don't see just a different approach on https://github.com/asyncapi/learning-paths/pull/9/files#r1494514714. For example, it says nothing about generating code.

Sergio, yes, thank you for bringing this problem to our attention! I agree. It was also my bad for not catching myself earlier. 😬 Please find learning path modules' outline below:

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Module 1: Introduction to AsyncAPI

Scene: Chan's ship crash-lands in Eve's backyard, initiating their adventure with AsyncAPI.

• What is AsyncAPI? An introduction to its purpose and capabilities.
• Why use AsyncAPI? Exploring its benefits and applications.
• Real-world use cases of AsyncAPI.

Module 2: Event-Driven Architectures

Reaction: Eve helps check Chan’s spaceship engine, introducing event-driven architectures.

• Introduction to event-driven architectures and their significance.
• How AsyncAPI facilitates designing event-driven systems.
• Designing APIs for microservices using AsyncAPI for effective integration.

Module 3: AsyncAPI Specification

Scene: Eve assists Chan in programming his spaceship, ensuring they can communicate.

• Understanding the AsyncAPI document structure and its core components.
• Deep dive into AsyncAPI's components: info, channels, components, tags, etc.
• Defining operations, messages, and schemas within AsyncAPI documents.

Module 4: Creating and Validating AsyncAPI Documents

Reaction: With the spaceship fixed, Eve looks forward to testing communication with Chan.

• Writing and documenting AsyncAPI code from scratch.
• Utilizing AsyncAPI tools for document validation.
• Hands-on exercises for creating and validating AsyncAPI documents.

Module 5: Summary & Next Steps

End Scene: Reflecting on the journey as Chan returns to his planet.

• Recap of what was learned across the modules.
• Recommend exploring AsyncAPI tools.
• Additional resources for extended learning, including documentation links and the AsyncAPI YouTube channel.

cc @smoya

[alequetzalli]

@mhmohona While this mentions creating an AsyncAPI document and document validation, we're still missing code creation with AsyncAPI.

[alequetzalli]

@mhmohona Thank you for adding code generation to your PR. 😄

Before we give this another technical review round, please notice how we have 2 sections repeating info about testing your work with the Studio tool. Please keep only one and remove the duplicate section.