Client: Create a new debug scene for surface normals

I made this primarily to debug the normals visualization. Might as well keep it, in case the winding order must change again.

Core/NativeClient/DebugDraw/Scenes/walls.lua

@@ -0,0 +1,51 @@
+local Mesh = require("Core.NativeClient.WebGPU.Mesh")
+local Plane = require("Core.NativeClient.DebugDraw.Plane")
+local NormalsVisualization = require("Core.NativeClient.DebugDraw.NormalsVisualization")
+local WorldAxis = require("Core.NativeClient.DebugDraw.WorldAxis")
+
+local worldAxesVisualizationMesh = WorldAxis()
+
+local groundMesh = Plane({ dimensions = { x = 4, z = 4 }, translation = { x = 0, y = 0, z = 0 } })
+
+local function createWallSurfaceEast()
+	local wallEast = Mesh("WallEast")
+
+	wallEast.vertexPositions = { 2, 0, -2, 2, 2, -2, 2, 2, 2, 2, 0, 2 }
+	wallEast.triangleConnections = { 0, 1, 2, 0, 2, 3 }
+	wallEast.vertexColors = { 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1 }
+	wallEast.surfaceNormals = { -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0 }
+	wallEast.diffuseTextureCoords = { 0, 0, 0, 0, 0, 0, 0, 0 }
+
+	return wallEast
+end
+
+local function createWallSurfaceNorth()
+	local wallNorth = Mesh("WallNorth")
+
+	wallNorth.vertexPositions = { -2, -2, -2, -2, 0, -2, 2, 0, -2, 2, -2, -2 }
+	wallNorth.triangleConnections = { 0, 1, 2, 0, 2, 3 }
+	wallNorth.vertexColors = { 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1 }
+	wallNorth.surfaceNormals = { 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1 }
+	wallNorth.diffuseTextureCoords = { 0, 0, 0, 0, 0, 0, 0, 0 }
+
+	return wallNorth
+end
+
+local wallEast = createWallSurfaceEast()
+local normalsVisualizationEast = NormalsVisualization(wallEast)
+local wallNorth = createWallSurfaceNorth()
+local normalsVisualizationNorth = NormalsVisualization(wallNorth)
+
+local scene = {
+	displayName = "Cube3D (demo)",
+	meshes = {
+		worldAxesVisualizationMesh,
+		groundMesh,
+		wallEast,
+		wallNorth,
+		normalsVisualizationEast,
+		normalsVisualizationNorth,
+	},
+}
+
+return scene