frontend: Add renamed Qt UI dialogs

frontend/dialogs/OBSUpdate.cpp

@@ -0,0 +1,45 @@
+#include "OBSUpdate.hpp"
+
+#include <OBSApp.hpp>
+
+#include "ui_OBSUpdate.h"
+
+OBSUpdate::OBSUpdate(QWidget *parent, bool manualUpdate, const QString &text)
+	: QDialog(parent, Qt::WindowSystemMenuHint | Qt::WindowTitleHint | Qt::WindowCloseButtonHint),
+	  ui(new Ui_OBSUpdate)
+{
+	ui->setupUi(this);
+	ui->text->setHtml(text);
+
+	if (manualUpdate) {
+		delete ui->skip;
+		ui->skip = nullptr;
+
+		ui->no->setText(QTStr("Cancel"));
+	}
+}
+
+void OBSUpdate::on_yes_clicked()
+{
+	done(OBSUpdate::Yes);
+}
+
+void OBSUpdate::on_no_clicked()
+{
+	done(OBSUpdate::No);
+}
+
+void OBSUpdate::on_skip_clicked()
+{
+	done(OBSUpdate::Skip);
+}
+
+void OBSUpdate::accept()
+{
+	done(OBSUpdate::Yes);
+}
+
+void OBSUpdate::reject()
+{
+	done(OBSUpdate::No);
+}