feat(tmux): smoother second bind b approach

Author: Kotmin

tmux/.tmux.conf

@@ -1,9 +1,11 @@
+unbind C-b
 # Main prefix
 set -g prefix C-a
 bind C-a send-prefix
 
 # Optional extra prefix during transition
-bind C-b send-prefix
+set -g prefix2 C-b
+bind C-b send-prefix -2
 
 ##### Reload
 bind r source-file ~/.tmux.conf \; display-message "tmux.conf reloaded"