Modify congen to include the tags property in case of OpenAPI, and the folders in case of Postman collection

[markfarkas-camunda]

Epic: https://github.com/camunda/product-hub/issues/2049

What should we do?

We should modify the congen (element template generator) to include the tags (for OpenAPI), or the folders (for Postman).

Implementation suggestion:

• add pathItem.getPost().getTags() in the OperationUtil.java
• in PostmanOperationUtil.java in the extractOperation method, use the value of the opIdentifier variable to extract the foldername(s)

Why should we do it?

We should do this to provide proper info through the scan method which makes it possible to group the methods (multi-level grouping is also possible)