Adjust the terrain and fallback camera for bobup trials

Now there are two targets at 15 and 40 feet.
The fallback camera has minimal FoV that still shows the instruments.

project/project.godot

@@ -17,6 +17,8 @@ config/icon="res://icon.svg"
 
 [display]
 
+window/size/viewport_width=1600
+window/size/viewport_height=900
 window/stretch/mode="viewport"
 
 [editor_plugins]
@@ -36,7 +38,6 @@ anti_aliasing/quality/msaa_3d=1
 
 [xr]
 
-openxr/enabled=true
 openxr/reference_space=2
 openxr/foveation_level=3
 shaders/enabled=true