Improve DX of schema specification

[karelklima]

Improve DX of schema specification using const type parameters: https://devblogs.microsoft.com/typescript/announcing-typescript-5-0/#const-type-parameters

This could be useful for creating a schema so that the as const is not needed, and may perhaps be replaced with a wrapper function.

[karelklima]

One big drawback is that it would require dependency on LDkit to specify the schema, whereas in the current state schema is just a plain object.

[karelklima]

In the future, it should be possible to work with satisfies TypeScript feature, but at this point it does not work in tandem with const assertions, which are still mandatory to infer the type correctly.

microsoft/TypeScript#51173

[karelklima]

One significant change has been achieved: #82.

Additional improvements are not planned at this stage.