Add create_typescript_schema() for client

[jet10000]

Currently, the model can be automatically converted to Python schema by create_schema, and it is expected to be automatically converted to TypeScript schema. This makes it convenient for client.

create_typescript_schema()
create_typescript_zod_schema()
create_dart_schema()

[martinsvoboda]

Very complex task... Rather use specialized tool like https://orval.dev/