pack.png painting

Add the famous original pack.png image among the others paintings.

The main painting is a 4x4 frame without downgrades the image quality.

There is another painting, but unplaceable in survival (only invalid with commands), which is a full size of the image, so an 8x8 frame (that very big).

Paintings id:

• minecraft:pack_png (placeable in survival)
• minecraft:pack_png_big (unplaceable in survival, only commands)