French translation (#451)

* french translation

* Update main.cpp

* Update main.cpp

Co-authored-by: watchha <watchha@users.noreply.github.com>

app/gui/CliQuitStreamSegue.qml

@@ -6,11 +6,11 @@ import Session 1.0
 
 Item {
     function onSearchingComputer() {
-        stageLabel.text = "Establishing connection to PC..."
+        stageLabel.text = qsTr("Establishing connection to PC...")
     }
 
     function onQuittingApp() {
-        stageLabel.text = "Quitting app..."
+        stageLabel.text = qsTr("Quitting app...")
     }
 
     function onFailure(message) {