CAMEL-21217: camel-rest-openapi consumer allows for the automatic unmarshalling of request body

[carnevalegiacomo]

Creation of the Java class OpenApiUtils for handling request and response types.

For media types of application/json, type and outType are set. Arrays and primitive types are also handled.

This change allows for the automatic unmarshalling of request bodies if bindingPackageScan is defined.

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