feat: fully implement profile controller;

feat: implement file upload handling in controller with size and type validation;
feat: add custom validation rules for bio and color hex fields;
refactor: enhance request handling with dedicated client info extraction;
chore: update profile DTOs with validation tags;
docs: profile controller swagger

backend/internal/services/setup.go

@@ -25,5 +25,6 @@ var Module = fx.Module("services",
     fx.Provide(
 			NewSmtpService,
 			NewAuthService,
+			NewProfileService,
     ),
 )