Frontend playwright tests

[henrychoy]

Add playwright tests for frontend. Basic tests for creating/editing/deleting resources.

• from the src/frontend folder, run npm install to install playwright
• Tests are under the src/frontend/tests folder
• Run tests manually with commands below from src/frontend using development mode db. headed allows you to see the browser when tests are running.
  • npm run test:e2e
  • npm run test:e2e:headed
• Run tests manually on a separate db just for testing. This may be the better option since your dev db doesnt get polluted. Please stop your dev flask server before running this.
  • npm run test:e2e:with-backend
  • npm run test:e2e:with-backend:headed
• you can run an individual test file like this:
  • npm run test:e2e:with-backend -- queues.spec.ts
• Or you can run a specific test with the title:
  • npm run test:e2e:with-backend -- -g "create queue"
• Added github workflow to run tests when submitting PR