docs: add playwright e2e testing docs (#31961)
docs: add playwright e2e testing docs (#31961)


electron/electron,electron/electron,gerhardberger/electron,electron/electron,electron/electron,gerhardberger/electron,gerhardberger/electron,gerhardberger/electron,gerhardberger/electron,electron/electron,electron/electron,gerhardberger/electron,gerhardberger/electron,electron/electron