Week 5 in-class: testing

Synced from si-679-f-26-week05-nyt-jessicadonoho/. These are copies; the original folder is untouched.

• package.json
• README.md
• tsconfig.json
• vitest.config.ts
• src/__tests__/products.e2e.test.ts
• src/__tests__/test-products.ts
• src/app.ts
• src/controllers/products-controller.ts
• src/db/db.ts
• src/db/products-repository.ts
• src/errors.ts
• src/index.ts
• src/middleware/error-handler.ts
• src/mocks-and-spies.unit.test.ts
• src/models/product.ts
• src/routes/products-router.ts
• src/services/products-service.ts
• src/services/products-services.unit.test.ts