Configuration to not add .ts to import path

[browniefed]

Kubb adds .ts to the import type {} from "file.ts". This requires a project to have allowImportingTsExtensions in the tsconfig to be true.

It would be nice to have an option to not generate import files with file extensions.

[stijnvanhulle]

For that you can use https://www.kubb.dev/getting-started/configure#output-extension

extension: {
      '.ts': '',
    },