Get free access here :

https://github.com/LorenzWieseke/ViewportRenderMultilayer

Introduction

Simple Add-on to render all your view layers as a viewport render animation.

Add a view layer, set up the output folder and file output settings.

Now click Viewport Render Multilayer in the View Menu of the 3D Viewport.

Only the View Layers, enabled for rendering, will be renderd. Choose a small frame range to test it first because Blender will freeze while the process is running.
Open a console before starting to see updates.

Features

• auto-generate folder structure for output, named by the view layers

• render preview within minutes instead of hours

• use blender's video sequence editor to composite your rendered layers

• composite multiple layer together

• enhance visual quality by using Eevee's Ambient Occlusion, Screen Space Reflection or Motion Blur

• disable overlay to get rid off all the lines and empties