* feat(auth.js): add validation for registration endpoint using validateRegistration middleware
feat(validateRegistration.js): add middleware to validate registration based on ALLOW_REGISTRATION environment variable
* fix(config.js): fix registrationEnabled and socialLoginEnabled variables to handle case-insensitive environment variable values
* refactor(validateRegistration.js): remove console.log statement
* chore(playwright.yml): skip browser download during yarn install
chore(playwright.yml): place Playwright binaries to node_modules/@playwright/test
chore(playwright.yml): install Playwright dependencies using npx playwright install-deps
chore(playwright.yml): install Playwright chromium browser using npx playwright install chromium
chore(playwright.yml): install @playwright/test@latest using npm install -D @playwright/test@latest
chore(playwright.yml): run Playwright tests using npm run e2e:ci
* chore(playwright.yml): change npm install order and update comment
The order of the npm install commands in the "Install Playwright Browsers" step has been changed to first install @playwright/test@latest and then install chromium. Additionally, the comment explaining the PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD variable has been updated to mention npm install instead of yarn install.
* chore(playwright.yml): remove commented out code for caching and add separate steps for installing Playwright dependencies and browsers
