Add TypeScript interfaces

[fox1t]

🚀 Feature Proposal

We need TS interfaces, alongside JSONSchemas, for better developer experience. The interfaces will be derived directly from Schemas.

Motivation

Please outline the motivation for the proposal.

TODO:

• rename model to models
• add one folder per model
• add a proper TS interface for every model
• export default the interface
• export JSONSchema as schema

[fox1t]

We are using typebox to define both TS interfaces and schemas at the same time.