Move shaders into glsl and hlsl directories

Move `data/shaders` to `data/shaders/glsl`
Move `data/hlsl` to `data/shaders/hlsl`

Fix up shader paths in the cpp files to point to the new glsl location.

`data/shaders/hlsl/compile.py` still overwrites the glsl .spv files (for
now).

Issue: #723

data/shaders/glsl/particlefire/normalmap.vert

@@ -0,0 +1,54 @@
+#version 450
+
+layout (location = 0) in vec3 inPos;
+layout (location = 1) in vec2 inUV;
+layout (location = 2) in vec3 inNormal;
+layout (location = 3) in vec3 inTangent;
+layout (location = 4) in vec3 inBiTangent;
+
+layout (binding = 0) uniform UBO 
+{
+	mat4 projection;
+	mat4 model;
+	mat4 normal;
+	vec4 lightPos;
+} ubo;
+
+out gl_PerVertex
+{
+	vec4 gl_Position;
+};
+
+layout (location = 0) out vec2 outUV;
+layout (location = 1) out vec3 outLightVec;
+layout (location = 2) out vec3 outLightVecB;
+layout (location = 3) out vec3 outLightDir;
+layout (location = 4) out vec3 outViewVec;
+
+void main(void) 
+{
+	vec3 vertexPosition = vec3(ubo.model *  vec4(inPos, 1.0));
+	outLightDir = normalize(ubo.lightPos.xyz - vertexPosition);
+
+	// Setup (t)angent-(b)inormal-(n)ormal matrix for converting
+	// object coordinates into tangent space
+	mat3 tbnMatrix;
+	tbnMatrix[0] =  mat3(ubo.normal) * inTangent;
+	tbnMatrix[1] =  mat3(ubo.normal) * inBiTangent;
+	tbnMatrix[2] =  mat3(ubo.normal) * inNormal;
+
+	outLightVec.xyz = vec3(ubo.lightPos.xyz - vertexPosition) * tbnMatrix;
+
+	vec3 lightDist = ubo.lightPos.xyz - inPos;
+	outLightVecB.x = dot(inTangent, lightDist);
+	outLightVecB.y = dot(inBiTangent, lightDist);
+	outLightVecB.z = dot(inNormal, lightDist);
+
+	outViewVec.x = dot(inTangent, inPos);
+	outViewVec.y = dot(inBiTangent, inPos);
+	outViewVec.z = dot(inNormal, inPos);
+
+	outUV = inUV;
+	
+	gl_Position = ubo.projection * ubo.model * vec4(inPos, 1.0);
+}