chore(config): use back C-b for tmux

config/tmux/tmux.conf

@@ -1,9 +1,14 @@
 # https://github.com/tmux/tmux/wiki/FAQ
 
-# Change prefix key
-set -g prefix C-a
-unbind C-b
-bind C-a send-prefix
+# Split panes using | and -
+bind | split-window -h
+bind - split-window -v
+
+# Switch panes using Alt without prefix
+bind -n M-Left select-pane -L
+bind -n M-Right select-pane -R
+bind -n M-Up select-pane -U
+bind -n M-Down select-pane -D
 
 # Color
 set -g default-terminal "tmux-256color"