Feature/support link list pagination tokens

[s7clarke10]

This change introduces an additional request / response style for API's based on the hateoas api model https://en.wikipedia.org/wiki/HATEOAS - the specific implementation that this has been built and tested against is FHIR based API's https://hl7.org/fhir/http.html. More detail around this is built into the README.md.

This specific change introduces for hateoas_body request and response types:

• Build pagination support for HATEOAS / FHIR API's
• Incremental Replication for HATEOAS / FHIR API's
• Introduces a start_date parameter so that if there is replication_key which is of a datetime datatype it can seed when data is replication from. The Meltano SDK has knowledge about start_dates for incremental replication.
• Introduces a search_parameter and search_prefix which is used to identify the replication field used by the API and how the data is compared when making an incremental request from the last run position (state).
• Updated README.md documentation for new features.

Other Changes:

• Updates the Meltano.yml kind / data types
• Adds a config.json.sample file for illustrating how to construct a config.json file when using the tap stand-alone for development purposes.

[s7clarke10]

Closed: This logic is now incorporated in this PR - #35

[s7clarke10]

Closed: This logic is now incorporated in this PR - #36