HW1: SliceDrop API

Synced from si-679-f-26-hw1-jessicadonoho/. These are copies; the original folder is untouched.

• package.json
• README.md
• tsconfig.build.json
• tsconfig.json
• src/__tests__/auth.test.ts
• src/__tests__/errors.test.ts
• src/__tests__/menu.test.ts
• src/__tests__/orders.test.ts
• src/app.ts
• src/constants.ts
• src/data/menu.ts
• src/data/orders.ts
• src/index.ts
• src/middleware/auth.ts
• src/routers/menu.ts
• src/routers/orders.ts
• src/types.ts
• src/validation/validate-order.ts