feat: add --override flag

lib/app.go

@@ -7,6 +7,7 @@ type App struct {
 	ApiInterval         int // How many ms to wait between one call to apis and the other
 	NoFallback          bool
 	StopOnFail          bool
+	OverrideDownload    bool
 }
 
 func NewApp() App {

lib/download.go

@@ -199,7 +199,7 @@ func (app *App) DownloadTrack(url string, outputFile string, service string, qua
 		return err
 	}
 
-	if fileExists {
+	if fileExists && !app.OverrideDownload {
 		app.log("File " + outputFile + " already exists")
 		return nil
 	}