Created install.sh and pyshelf.sh

Also refactored methods to work as a zipapp

pyshelf.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/sh
+# This script is used to run the pyshelf application.
+# It sets up the environment and runs the main script.
+# first we need to activate the virtual environment
+if [ -d ".venv" ]; then
+	source venv/bin/activate
+else
+	echo "Virtual environment not found. Please create it first."
+	exit 1
+fi
+# then we need to run the main script
+if [ -f "release/pyshelf" ]; then
+	./release/pyshelf	
+else
+	echo "Main script not found. Please check the directory."
+	exit 1
+fi