Update scenes, lighting and materials

Authoring pass on The Room plus lighting tweaks across Lobby and Main, add a new Gold material, and bump the PC renderer SSAO intensity and radius.

Assets/Scenes/Lobby.unity

@@ -23,7 +23,7 @@ RenderSettings:
   m_AmbientSkyColor: {r: 0.212, g: 0.227, b: 0.259, a: 1}
   m_AmbientEquatorColor: {r: 0.114, g: 0.125, b: 0.133, a: 1}
   m_AmbientGroundColor: {r: 0.047, g: 0.043, b: 0.035, a: 1}
-  m_AmbientIntensity: 0.1
+  m_AmbientIntensity: 1
   m_AmbientMode: 0
   m_SubtractiveShadowColor: {r: 0.42, g: 0.478, b: 0.627, a: 1}
   m_SkyboxMaterial: {fileID: 2100000, guid: f9d69f623d79bc34499b2939a9637ccc, type: 2}
@@ -93,7 +93,7 @@ LightmapSettings:
     m_ExportTrainingData: 0
     m_TrainingDataDestination: TrainingData
     m_LightProbeSampleCountMultiplier: 4
-  m_LightingDataAsset: {fileID: 112000000, guid: 9abd218fc15b0ec44ad172655c5e46a4, type: 2}
+  m_LightingDataAsset: {fileID: 112000000, guid: a06580b201713f049859865adcff3e21, type: 2}
   m_LightingSettings: {fileID: 0}
 --- !u!196 &4
 NavMeshSettings: