add hexyl based unity levelN file explorer

scripts/unitylevel.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+# USAGE: ./unitylevel.sh line [dir]
+
+LINE="$1"
+DIR=${2+"$(realpath $2)/"};
+
+clear;
+for i in $(ls ${DIR}level* | awk '{ print substr($1, 6, length($1)) }' | sort -n); do
+  echo -n "${LINE}:level${i} "
+  if [[ $i -lt 10 ]]; then
+    echo -n ' '
+  fi;
+
+  hexyl "level$i"               \
+    | head -n $(( "$LINE" + 1 )) \
+    | tail -n 1
+done