add self updater (#1352)

* add self updater

* remove updater tests after validation

src/launcher/include/updateRelease.h

@@ -0,0 +1,38 @@
+#ifndef UPDATE_RELEASE_H
+#define UPDATE_RELEASE_H
+
+#include <QByteArray>
+#include <QDateTime>
+#include <QString>
+#include <QUrl>
+
+namespace UpdateRelease {
+
+inline const QString LATEST_URL =
+    QStringLiteral("https://api.github.com/repos/KytyPS5/KytyPS5/releases/latest");
+inline const QString TAG_URL =
+    QStringLiteral("https://api.github.com/repos/KytyPS5/KytyPS5/releases/tags/%1");
+inline const QString PAGE_URL =
+    QStringLiteral("https://github.com/KytyPS5/KytyPS5/releases/tag/%1");
+inline const QString DOWNLOAD_URL =
+    QStringLiteral("https://github.com/KytyPS5/KytyPS5/releases/download/%1/%2");
+
+struct Info {
+	QString    tag;
+	QUrl       page_url;
+	QUrl       download_url;
+	QByteArray sha256;
+	qint64     size = 0;
+	QDateTime  published_at;
+	QString    error;
+};
+
+enum class VersionRelation { Current, Newer, Older, Unknown };
+
+[[nodiscard]] QString         PlatformSuffix();
+[[nodiscard]] Info            Parse(const QByteArray& data, const QString& platform_suffix);
+[[nodiscard]] VersionRelation Compare(const Info& latest, const Info& current);
+
+} // namespace UpdateRelease
+
+#endif // UPDATE_RELEASE_H