Class examples needed

**Your Godot version:**
3.2.2

**Issue description:**

Class page is a bit rubbish. It's really hard to figure out how to make a class. Classes are pretty fundimental and there should be a super clear example before the complex documentation

This screenshot from a random YouTube video explains classes in 10 seconds. The links below are useless.


None of us are coming to Godot as noobs, we know how to code. We just want to see how to create a class and move along with our lives. Simple examples are such a time saver. Better if we can copy and paste the code :)

**URL to the documentation page (if already existing):**

https://docs.godotengine.org/en/stable/development/cpp/object_class.html
https://docs.godotengine.org/en/stable/getting_started/workflow/best_practices/what_are_godot_classes.html