Provide config schema

Problem/Motivation

When providing settings, a module should also provide a schema to define the datatype.

Steps to reproduce

Install config inspector
See that there is no config schema for the config

Proposed resolution

Provide a config schema

Remaining tasks

Create config schema

User interface changes

N/A

API changes

N/A

Data model changes

If a setting is not saved in correct datatype, the datatype can change but will be correct afterwards.