Purpose of this PR

After discussing with Mathieu Muller, we had the idea of opening the main room to be able to see more the "recent" environment effects / features. (Water, Cloud Layer, Volumetric Clouds, Atmospheric Scattering, Volumetric Fog).

To be able to do that, the door on the other side has been duplicated to be able to access à small concrete pier.

In addition to that, there's a few things that has been done to the template as well:

• Adding some water. It needed to have a water decal around the area to lower the water surface below the room 1, 2 & 3. This water decal is a procedural one (circle and rectangle together to match the template topography) lowering the surface to -10m to avoid having water in the other room. Especially if user increase the wind.

• Cloud Layer has been added.
• PBR Sky replaced the HDRI Sky to be able to set a ground tint cohérent with the water surface (slightly blue).
• Fog Attenuation distance has been reduced to 2000 (instead of 5000) in the main room.
• Sun rotation has been slightly changed to account for better shadows now that we have another opening in the room.
• Shadow proxy has been updated to account for the window.
• Quality settings have been modified to include water and simulation resolution according to their levels.
• The controllers have been moved in the pier directly to emphasis on the new setup.
• A shell has been created for the outside of the dome and the shadow proxy has been cut properly to avoid seeing it from the outside.
• No new material have been created.
• Lastly, the reflection probes has been moved and tweaked a little to avoid them "leaking" into the water.

And lighting have been rebaked.

Testing status

Opened the template with Unity 6.0, 6.1, 6.2, 6.3 to make sure nothing was broken.

Comments to reviewers

I know there's graphic tests with this project so I need to probably updated those as well.
We're open to suggestions if needed.