Replace the Spring Boot JSP template with Freemarker and integrate the given Bootstrap 5 template files

1. Currently the project is base on Spring boot framework
2. We need the template from JSP to Freemarker
3. And intgrate given Bootstrap 5 template files
4. Must have experiences of Java, Spring boot, Freemarker, Bootstrap, HTML, CSS and jQuery
5. The project is one Github: https://github.com/yeszao/shopizer, base on shopizer, you need to integrate to sm-shop module (frontend)
6. Attachment is the list you need to do, and also hope fix small bugs if you find in the integration.