Add alias for tmux to always enable 256 colors mode

.zsh.d/config.d/alias.zsh

@@ -47,6 +47,8 @@ alias mgrep="grep --color=tty -rnisH"
 alias rsu="sudo -E zsh"
 alias reload="exec zsh"
 
+alias tmux="tmux -2"
+
 #
 # Log viewers aliases
 #