Add user entity

entities/user_entity.h

@@ -0,0 +1,31 @@
+#ifndef USER_ENTITY_H
+#define USER_ENTITY_H
+
+#include <QString>
+#include <QCryptographicHash>
+
+
+enum class UserRole {
+    ADMINISTRATOR, DISPATCHER, SKIPPER
+};
+
+
+class user_entity
+{
+private:
+    unsigned long long _id;
+    QString _login;
+    UserRole _role;
+    QByteArray _pwd_hash;
+
+public:
+    user_entity() = default;
+    user_entity(const QString &login, const QString &password, UserRole role);
+
+    unsigned long long id();
+    const QString login();
+    UserRole role();
+    bool verify_password(const QString &password);
+};
+
+#endif // USER_ENTITY_H