HTMX integration section in Thymeleaf documentation

[monjurmorshed793]

HTMX has introduced a great advancement for dynamic behavior to server-side based projects. Lots of people are using Thymeleaf with HTMX. So HTMX integration with Thymeleaf in the document section may help beginners as well as experts. Also, best practices and proper integration techniques can be introduced in the documentation. If possible, HTMX integration related attributes can be also added.