[DART] We need a flag to generate models with json annotation

[Driky]

Reason/Context

Why we need this improvement?

A very common use-case when generating model is the serialization/deserialization to/from json. Currently this is not covered by the cli even tough modelina supports it.

How will this change help?

With this change we save time on several points:

• Right now we have to edit model by hand to add json annotations
• Code written by hand is lost on subsequent model generation

Description

What changes have to be introduced?

From a quick look at src/commands/generate/models.ts:

• we would need a new flag to indicate if we want to generate the model with the serialization annotations ex: --dart-json-annotations
• the case handling the dart generation would need to handle the new flag. This example seems to show how to apply the right configuration when instantiating the model generator

Will this be a breaking change?

No, this would add an optional flag. Old script would still work.

How could it be implemented/designed?

See example mentioned previously

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[github-actions]

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[jonaslagoni]

@derberg do you mind transferring this to Modelina 🙂

[github-actions]

Welcome to AsyncAPI. Thanks a lot for reporting your first issue. Please check out our contributors guide and the instructions about a basic recommended setup useful for opening a pull request.
Keep in mind there are also other channels you can use to interact with AsyncAPI community. For more details check out this issue.