[Move refactor] Move dialogs to interface/widgets/ (#6234)

* Move dialogs/ underneath interface/widgets since QDialog inherits from QWidget.

---------

Co-authored-by: Lukas Brübach <Bruebach.Lukas@bdosecurity.de>

cockatrice/src/interface/widgets/dialogs/dlg_register.h

@@ -0,0 +1,62 @@
+/**
+ * @file dlg_register.h
+ * @ingroup AccountDialogs
+ * @brief TODO: Document this.
+ */
+
+#ifndef DLG_REGISTER_H
+#define DLG_REGISTER_H
+
+#include <QComboBox>
+#include <QDialog>
+#include <QLineEdit>
+
+class QLabel;
+class QPushButton;
+class QCheckBox;
+
+class DlgRegister : public QDialog
+{
+    Q_OBJECT
+public:
+    explicit DlgRegister(QWidget *parent = nullptr);
+    QString getHost() const
+    {
+        return hostEdit->text();
+    }
+    int getPort() const
+    {
+        return portEdit->text().toInt();
+    }
+    QString getPlayerName() const
+    {
+        return playernameEdit->text();
+    }
+    QString getPassword() const
+    {
+        return passwordEdit->text();
+    }
+    QString getEmail() const
+    {
+        return emailEdit->text();
+    }
+    QString getCountry() const
+    {
+        return countryEdit->currentIndex() == 0 ? "" : countryEdit->currentText();
+    }
+    QString getRealName() const
+    {
+        return realnameEdit->text();
+    }
+private slots:
+    void actOk();
+
+private:
+    QLabel *infoLabel, *hostLabel, *portLabel, *playernameLabel, *passwordLabel, *passwordConfirmationLabel,
+        *emailLabel, *emailConfirmationLabel, *countryLabel, *realnameLabel;
+    QLineEdit *hostEdit, *portEdit, *playernameEdit, *passwordEdit, *passwordConfirmationEdit, *emailEdit,
+        *emailConfirmationEdit, *realnameEdit;
+    QComboBox *countryEdit;
+};
+
+#endif