Move Jest configuration to root of Sprint-3 directory

[textbook]

• Allows using either the Jest testing extension in VS Code or the terminal to run the tests
• Deduplicates repeated configuration

You can try the following:

• VS Code extension:
  • Install Orta.vscode-jest (should be prompted, as it's now a workspace recommendation); and
  • Run tests from Test Explorer
• Terminal:
  • Run npm t (or npm test, npm run test) to run all of the tests
  • To run tests for one npm workspace/Jest project, either:
    • Run npm t <name>; or
    • cd into that directory and run npm t.

[textbook]

🧵 Slack

[illicitonion]

Amazing, thanks!