example: add more files to playwright .gitignore

[JamBalaya56562]

Description

create-playwright makes the below special .gitignore file.

node_modules/
/test-results/
/playwright-report/
/blob-report/
/playwright/.cache/

It's good to add these files to .gitignore for convinience.

Adding or Updating Examples

• The "examples guidelines" are followed from our contributing doc https://github.com/vercel/next.js/blob/canary/contributing/examples/adding-examples.md
• Make sure the linting passes by running pnpm build && pnpm lint. See https://github.com/vercel/next.js/blob/canary/contributing/repository/linting.md

[ijjk]

Allow CI Workflow Run

• approve CI run for commit: 28021ba

Note: this should only be enabled once the PR is ready to go and can only be enabled by a maintainer