1. Run the project --- (npm run dev)
2. Data Sanitization & Schema Validations (Schema)
3. validator package (for validation like email, password, photoURL, etc)
4. bcrypt (for password incription)
5. cookie-parser (for reading cookie, no need of cookie-parser for saving cookie on browser)
6. JWT - JSON Web Token (contains header, payload and verify signature)
7. add userSchema.method (schema methods)

authRouter

• Post /signup✅
• Post /login✅
• Post /logout✅

profileRouter

• Get /profile/view✅
• Patch /profile/edit✅
• Patch /profile/password✅

connectionRequestRouter

• Post /request/send/:status/:toUserId✅
• Post /request/review/:status/:requestId✅

userRouter

• Get /user/request/received✅
• Get /user/requests✅
• Get /user/feed✅

status: ignored, interested, accepted, rejected