Tracking Issue: Example images

[Penaz91]

I noticed that in certain parts, the book becomes really text-heavy, without many visual mediums to help break up the content and understand things better.

Here are some ideas of images to add:

• [x] Off-screen objects optimization
• [x] Resource pools (instantiation, pull, return)
• [ ] Lookup tables
• [x] Memoization
• [x] Stretching/Rotating/Shearing matrices (examples with a square)
• [ ] Console/PC/Mobile/Web example images (maybe just as decoration?)
• [x] Examples of 1/2/4/8/16 bit colors (more colors are useless) (resources)
• [ ] Images with less details on the background (resources)
• [ ] Images with muted colors in the background (resources)
• [ ] Elements contrasting with background (resources)