Added 'bugs' section for OOP module

• Added a "kinks to be aware of" section for OOP module to document commonly reported bugs on Slack. This page is stored inside the kinks folder in the REPL inside relevant sub-folder.
• Added a line of code linking the bug page to the main OOP module page
• Updated the main kinks README.md to display the new section (also includes the DBNW bugs page, which was missing previously)

This update requires assets in the binary-assets repository, which includes a couple of images. I have create a new PR requesting to add them. PR link here