feat: paliminary updater

- can check for need to update
- can select a version to update to
- perform update: TODO

Signed-off-by: Rachel Powers <508861+Ryex@users.noreply.github.com>

launcher/Version.h

@@ -56,6 +56,7 @@ class Version {
     bool operator!=(const Version &other) const;
 
     QString toString() const { return m_string; }
+    bool isEmpty() const { return m_string.isEmpty(); }
 
     friend QDebug operator<<(QDebug debug, const Version& v);