Updated material editor to only show relevant shader settings

[adriengivry]

Description

• Settings that aren't available to the currently selected variant (based off the enabled shader features), are now hidden
• Material serialization flow updated to skip properties that aren't used by the current variant
• Added warning when a shadow receiver doesn't have the right uniforms
• Cleaned up material editor and renamed sections
• Cleaned up atmospheric scattering shader (removed unused code)

Related Issue(s)

N/A

Review Guidance

Write here.

Screenshots/GIFs

OvEditor_xG1shs59fq.mp4