Rename from Picop to Picopackage

exe/ppkg

@@ -0,0 +1,15 @@
+#!/usr/bin/env ruby
+
+# Add lib directory to load path
+lib_path = File.expand_path('../lib', __dir__)
+$LOAD_PATH.unshift(lib_path) unless $LOAD_PATH.include?(lib_path)
+
+require 'picopackage'
+
+begin
+  Picopackage::CLI.run(ARGV)
+rescue => e
+  warn "Error: #{e.message}"
+  warn e.backtrace if ENV['DEBUG']
+  exit 1
+end