HDX-9881 Udpating ids in dataset and resource endpoints

[IanHopkinson]

This PR renames query parameters and response parameters in the resource and dataset endpoints. This is done without requiring a change in hapi-sqlalchemy-schema.

The fields changed are as follows:
dataset:
hdx_id -> dataset_hdx_id
hdx_stub - > dataset_hdx_stub
title -> dataset_hdx_title
resource:
hdx_id -> resource_hdx_id
dataset_title -> dataset_hdx_title

Possible we should also change name in resource to resource_hdx_name.

The process, as described by @alexandru-m-g, is as follows:

• change the Dataset pydantic model
• change the DatasetView sqlAlchemy model
• rename fields through the query path, starting with the endpoint router

Optional types added are not really part of this ticket. They were just missing.