feat: add tooltip to load menu button

dzgui/strings/preconnect.py

@@ -1,6 +1,9 @@
 update_mods = "Update mods and connect"
 connect = "Connect"
 connect_last = "Load to menu screen"
+connect_last_tooltip = (
+    "Launch DayZ with these mods (if any) and\ngo to the menu screen without connecting."
+)
 back = "Back"
 cancel = "Cancel"
 warnings = "Warnings"

dzgui/views/pages/preconnect.py

@@ -107,7 +107,7 @@ class PreConnectionAssistant(Gtk.ScrolledWindow):
         )
         self.ok = Gtk.Button(label=preconnect.update_mods, halign=Gtk.Align.END)
         self.connect_last = Gtk.Button(
-            label=preconnect.connect_last, halign=Gtk.Align.END
+            label=preconnect.connect_last, halign=Gtk.Align.END, tooltip_text=preconnect.connect_last_tooltip
         )
 
         # TODO: abstract