Plugin template OpenAPI validation

[alexec]

Summary

Currently, the structure of a plugin template is free-from, it can even be a string:

plugin:
  hello: "yes"

Thats fine. But we could allow plugin developers to define the OpenAPI schema and validate it when the template is created.

Use Cases

When would you use this?

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[alexec]

The reason I did not include this is v1 was because, validation will also happen by the plugin itself. So this would duplicate that and might therefore not be needed.