Hello i want to study odoo pos source code, i know we can look at the code in the addson folder, i have found the pos module, but there are still so many folders and files, i want to take a small step in learning it

so, i want to ask which file name and folder name in the pos folder should i look for if I want to see the code for displaying pictures like the chair and tables? and also the search product function.

https://youtu.be/W_lgQVWMgkc?t=566 , it's this one.