chore(tmux): move dotfiles in their own tmux session

tmuxinator/default.yml

@@ -1,6 +1,5 @@
 name: Standard
-root: ~/.dotfiles/
+root: ~/
 windows:
   - Vim: vim
-  - Dotfiles: clear
   - Terminal: cd ~/Downloads; clear

tmuxinator/dotfiles.yml

@@ -0,0 +1,5 @@
+name: Dotfiles
+root: ~/.dotfiles/
+windows:
+  - Vim: vim
+  - Terminal: clear