Add wiki tutorials for cycles and eevee rendering

[ScanMountGoat]

The goal is to ease the transition from users working with other 3D software or people used to Studio's rendering interface. Linking to Blender's documentation where appropriate will help keep the guide concise. This should also include screenshots.

• lighting setup in cycles
• creating a backdrop mesh for the background color
• shadow catching and transparent renders
• setting up a camera in Blender
• matching existing scene and render setups from Bricklink Studio's Eyesight
• saving scene to a Blender file or startup file
• sampling, denoising, etc
• link to a demo scene