[REQ] [typescript-axios] New generator option to set file extension for ECMAScript module resolution

[GenFlogi]

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

Same problem as #14333 but in case of typescript-axiox generator: For modules Node.js requires file extensions for ESM imports (import * as runtime from "../runtime.js").

Describe the solution you'd like

Adding a new option importFileExtension in the same way as for typescript-fetch generator.