[REQ] [Typescript] Only generate types with no services calls

Is your feature request related to a problem? Please describe.

We have a requirement to add cancel tokens to our Axios service calls and have already written this layer. I want to be able to only generate Typescript typings without the axios/fetch service calls (since I would have to write a generator to get cancel token sent to Axios).

Describe the solution you'd like

Option to generate Typescript types only (does this require a new generator type [typescript]?)

Describe alternatives you've considered

I've considered using the following: https://github.com/horiuchi/dtsgenerator, but would rather use OpenApi Generator because of the huge following/support.

Additional context

Start by locating the existing TypeScript generator and the templates or entry points that produce Axios and fetch service calls. Determine how generator options are defined and how typings are currently emitted. Done means a documented option generates TypeScript types without generating service calls, while preserving the existing default behavior.