Changed . token to _dot

This change allows the dotfiles to work with chezmoi (e.g: on windows)
and improves grepability with neovim/telescope

dot_config/nushell/nu_scripts/sourced/imaging/divider.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+if [ $# -eq 0 ]; then
+  echo "Usage: divider file"
+  exit 1
+fi
+printf '\033]1337;File=inline=1;width=100%%;height=1;preserveAspectRatio=0'
+printf ":"
+base64 < "$1"
+printf '\a\n'