* Add explicit pass architecture to lightweight. It is possible to write a custom pass and a custom LW renderer and arrange these passes in a way that makes sense for your project.
* Remove Command buffer from setup API
* Pull surface data into their own passes for more explicit control.
* Splitting out existing LW passes to be more granular
* Add default LWRP renderer that can be used as a reference
* Add test for custom LW pipe.
* Split out RT handles to be part of the renderer configuration now.
* Remove Surface handling from LW Renderer and push to passes.
* Add template images for new test.
* Update changelog
* Fixed custom renderer lifetime issue. Materials are not cached anymore in the passes, instead the renderer is passed in execution and resources are accessed from it.
* updated release notes
* Renamed LightweightForwardRenderer to ScriptableRenderer
* Added FB Input and Read macros to LWRP Core
* - Created PerCamera and LightConstantBuffer
- Added _InvCameraViewProj matrix
- Remove unused LightweightConstantBuffer class
* removed string allocation in renderloop. Camera name for profiler should be just fine.
* removed nested camera rendering check. we are preventing it on engine side.
* Fixed type in DefaultRenderer
* removed unreferenced m_IsCameraRendering
* fixed Unlit shader GUI
* Added HALF versions of FRAMEBUFFER_INPUT macros. Remove MS because we only have it partially implemented in SRP shader library.
* Removed empty ForwardLitPass