Sync with new asset lib

[freezy]

This PR replaces the asset lib with the new, more optimized version.

[Copilot]

Pull Request Overview

This PR replaces the asset library with a new, more optimized version to improve performance and compatibility. The changes include updating the package dependency and adding new assembly references for proper integration.

• Updated asset library package from "org.visualpinball.unity.assetlibrary" to "org.visualpinball.unity.assets"
• Added assembly definition references for better module integration
• Introduced LookDev project settings and configuration files for development workflow

Reviewed Changes

Copilot reviewed 146 out of 168 changed files in this pull request and generated no comments.

File	Description
package.json	Updates asset library dependency to the new optimized package
Runtime/VisualPinball.Engine.Unity.Hdrp.asmdef	Adds assembly references for proper module integration
LookDev~/ProjectSettings/*	Adds Unity project configuration files for development environment
LookDev~/Assets/*	Adds development assets including textures and render pipeline settings

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