OpenAPI TypeScript Helpers

openapi-typescript-helpers is a utility package providing TypeScript helper types designed to complement types generated by `openapi-typescript`. Its primary purpose is to offer generic type transformations, which are internally leveraged by other packages in the `openapi-ts` ecosystem, such as `openapi-fetch`. The current stable version is `0.1.0`. Given its recent initial release and close ties to `openapi-typescript`, its release cadence is likely tied to major `openapi-typescript` releases and feature additions, though it may not have independent major version bumps as frequently. Key differentiators include its focus on type-level transformations for refining generated OpenAPI types, particularly for handling `readOnly` and `writeOnly` properties, ensuring type safety and correct data handling across different API operations. Unlike `openapi-typescript` which generates the types, this package provides tools to manipulate and refine those generated types for specific application logic.