[Typescript Playwright support] ES Projects need explicitly call generated files .cjs

[shitchcock]

When running Artillery + Playwright + Typescript, it creates an intermediary compiled .js file using CommonJS of the scenario you are running in a dist/ folder.

Because Artillery is expecting commonjs but the project indicates these files are ES, Artillery fails with

⠹ worker error, id: 2 Error [ERR_REQUIRE_ESM]: require() of ES Module yourPath}/dist/{processorFilename}.js from {yourPath}node_modules/@artilleryio/int-core/lib/runner.js not supported.{processorFilename}.js is treated as an ES module file as it is a .js file whose nearest parent package.json contains "type": "module" which declares all .js files in that package scope as ES modules.
Instead either rename flows.js to end in .cjs, change the requiring code to use dynamic import() which is available in all CommonJS modules, or change "type": "module" to "type": "commonjs" in package.json to treat all .js files as CommonJS (using .mjs for all ES modules instead).

This could be mitigated by adding an option to config isEsmProject. When isEsmProject is true, the extension here would become .cjs instead of .js