yes they are included.
How to use it?
Since the project files are in Png format
Open your Unity project and navigate to the Assets, Resources, and then Images folders
Select the PNG image in the Project window
In the Inspector, change the Texture Type from Default to Sprite (2D and UI)
Click Apply at the bottom of the window
Drag and drop the PNG sprite into the project hierarchy window
And for the aseprite.
Open Package Manager
Press the + button and select Add package by name
Enter com. unity. 2d. aseprite
Press OK. If you see a Burst popup saying that a new version of Burst has been installed, restart the editor
You are now ready to import . ase and . aseprite files into your project
let us know if you have anymore questions.