[Feature]: Extend codegen languages using plugins

[carlosalberto]

🚀 Feature Request

There is currently an external project (in the playwright-community organization) that adds support for Golang. And it seems this is not a priority for the core Playwright team, and hence no out-of-the-box codegen support for Golang can be added, it would be great to expose a way to expand languages support (via external dependencies, of course).

Example

npx playwright codegen --target golang

Motivation

Be able to use the fabulous Playwright codegen functionality from Golang land.

[carlosalberto]

Probably related to https://github.com/microsoft/playwright/issues/28474

[mxschmitt]

Folding into https://github.com/microsoft/playwright/issues/28474