Use content negotiation for HTTP extender. TODO: need to genericise the content negotiation logic to apply possibly to other extenders.

Use example project to setup integration tests among the modules.

Split modules to each package.

New API is much more flexible in implementation.

Make architecture more flexible.

Define dedicated package for HTTP server.

Use correct paths when referring to extended interfaces.

Include sequences in data source definition.

Add example service as well as data source for duckdb.

Include Tagalog demo language.

Put message key in its correct location.

Ensure root can be called with any method.

Unify returning of Accept-Post and Accept-Patch items.

Include basic description of the error and the steps to resolve them.

Dynamic attributes for metadata are included for createdAt and updatedAt.

Include example project and requests.