How to import art sprites into the Unity?
Pre-conditions:
Unity 2019.4.17f1
2D project template
Prepared sprite assets
To repeat:
1. Create "Assets" folder on the top project hierarchy
2. There create "Sprites" folder
3. In the "Sprites" create "UI" folder
4. Drag or copy and paste sprites to import into the "Sprites" project directory.
5. Rename directory files in Pascal Case to be clear