feat: add editable dock launchers

cosmic-app-list/i18n/en/cosmic_app_list.ftl

@@ -5,4 +5,10 @@ quit-all = Quit All
 new-window = New Window
 run = Run
 run-on = Run on {$gpu}
-run-on-default = (Default)
+run-on-default = (Default)
+edit-launcher = Edit launcher
+launcher-name = Name
+launcher-command = Command
+launcher-icon = Icon
+save = Save
+cancel = Cancel

cosmic-app-list/i18n/fr/cosmic_app_list.ftl

@@ -6,3 +6,9 @@ new-window = Nouvelle fenêtre
 run = Exécuter
 run-on = Lancer avec { $gpu }
 run-on-default = (Défaut)
+edit-launcher = Modifier le lanceur
+launcher-name = Nom
+launcher-command = Commande
+launcher-icon = Icône
+save = Enregistrer
+cancel = Annuler