add message when Tmux is reloaded

.config/tmux/tmux.conf

@@ -7,7 +7,10 @@ set -s escape-time 0
 set -s default-terminal "${TERM}"
 set-option -sga terminal-overrides ",xterm*:Tc:RGB"
 
-bind-key r source-file ~/.config/tmux/tmux.conf
+bind-key r {
+    source-file ~/.config/tmux/tmux.conf
+    display-message "Config reloaded !"
+}
 
 bind c new-window -c "#{pane_current_path}"
 bind '"' split-window -c "#{pane_current_path}"