Data type validation on RPC calls

[basmasking]

Jitar needs to have an option to validate incoming data through its apis. As with the rest of the product, we want to have a configuration only option to define the validation schemas.

What needs to be done for this story;

• update the segment file configuration with a validation model
• add the configuration to generated cache files
• validate the incoming data on the server with the provided configuration
• translate validation errors to http 400