MicroSplat - URP 2022 Support

Adds support for Unity's Universal Render Pipeline in Unity 2022.2 and Unity 2022.3LTS. Discord Group If you have purchased the URP 2021 Support package from the JDBTechServices store, you can upgrade to this version for free. Go to: https://shadowed.services/jdbtech/ and enter you original invoice number and github username and you will be granted access. Unity's new Scriptable Render Pipeline (SRP) requires a full rewrite of all shaders for each version of each SRP. This module adds support for targeting the Universal Render Pipeline (2022.2 and 2022.3LTS with URP 14.x), and works for all MicroSplat modules.