Playwright tests

[cedric-anne]

Checklist before requesting a review

• I have read the CONTRIBUTING document.
• I have performed a self-review of my code.
• I have added tests that prove my fix is effective or that my feature works.
• This change requires a documentation update.

Description

This PR will contain all changes related to Playwright tests and will be merged once everything will be ready. Until it is done, PRs related to Playwright must target the task/playwright branch.

[AdrienClairembault]

(I'll force push regularly to rebase this branch to the latest 11.0/bf)

[AdrienClairembault]

Tasks list:

• Setup e2e environment (Add E2E environment #21802)
• Update glpi-project/tools to handle playwright files (Add support for playwright files tools#84)
• Install playwright, with a proof of work using example tests (Install and run playwright #22028)
• Load .env files to setup base URL, update proof of work tests to target a real GLPI page
• Lint tests
• Support authentication, update proof of work to show a test that login into GLPI
• Support changing profiles, update proof of work to show a test as a self service user
• Support GLPI's API, update proof of work to show a test that use the API to create an item
• Remove proof of work tests and add a few real tests
• Add CI workflow to run and lint tests
• Update legacy run_tests.sh script
• Use paid runner? Can be delayed to post-merge as we won't have many tests at this point
• Merge to 11.0/bugfixes