UI: Add front-end auto-updater

UI/window-basic-main.hpp

@@ -200,7 +200,7 @@ private:
 	bool          QueryRemoveSource(obs_source_t *source);
 
 	void          TimedCheckForUpdates();
-	void          CheckForUpdates();
+	void          CheckForUpdates(bool manualUpdate);
 
 	void GetFPSCommon(uint32_t &num, uint32_t &den) const;
 	void GetFPSInteger(uint32_t &num, uint32_t &den) const;
@@ -595,7 +595,7 @@ private slots:
 
 	void logUploadFinished(const QString &text, const QString &error);
 
-	void updateFileFinished(const QString &text, const QString &error);
+	void updateCheckFinished();
 
 	void AddSourceFromAction();