feat: users & authentication implementation

domain/gateways/IUserRepository.go

@@ -0,0 +1,10 @@
+package gateways
+
+import . "GohCMS2/domain/user"
+
+type IUserRepository interface {
+	Get(id uint32) (User, error)
+	GetByUsername(username string) (User, error)
+	GetAll() []User
+	Create(user User) (User, error)
+}