Introduce validation mechanism for custom json schema annotation

[chenqi0805]

Is your feature request related to a problem? Please describe.
We have introduced some custom annotations for generating json schema for plugins, e.g. @AlsoRequires. However, a validation mechanism has been missing which could lead to misses in specifying correct values

Describe the solution you'd like
Validate plugin config instances against the custom annotations

Describe alternatives you've considered (Optional)
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.