add summary at the end of each page in each chapter

[arhimede]

Feature Request

Q	A
New Feature	yes
RFC	no
BC Break	no

Summary

For instaance in this page, at the bottom ( or at the top of the page)
add a code block with something like:

### Summary 
 [+] /config.local.php
 [M] composer.json
[-] /config/local/script.php

to clarify for each chapter which files was added, modified or deleted

https://docs.dotkernel.org/tutorial-101/v1/chapter-1/