[#92] add raytracing shader templates (TODO)

ToDo: implement shaders, adjust push_constants, descriptorSets / -Writes etc.

projects/rtx/resources/shaders/raytrace.rchit

+#version 460
+#extension GL_EXT_ray_tracing : require
+
+layout(binding = 3, set 0) buffer vertices
+{
+    vec3 vertices[];
+};
+
+layout(binding = 4, set 0) buffer indices
+{
+    uint indices[];
+};
+
+void main() {
+
+}

projects/rtx/resources/shaders/raytrace.rgen

+#version 460
+#extension GL_EXT_ray_tracing : require
+
+// A location for a ray payload (we can have multiple of these)
+layout(location = 0) rayPayloadEXT RayPayload pay;
+
+layout(binding = 0, set = 0, rgba32f) uniform image2D outImg;           // the output image -> maybe use 16 bit values?
+layout(binding = 1, set = 0) uniform accelerationStructureEXT tlas;     // top level acceleration structure (for the noobs here (you!))
+
+layout( push_constant ) uniform constants {     // TODO: add push_constants in main.cpp!
+    vec4 camera_position;   // as origin for ray generation
+    vec4 camera_right;      // for computing ray direction
+    vec4 camera_up;         // for computing ray direction
+    vec4 camera_forward;    // for computing ray direction
+
+    uint frameCount;        // what is this? the actual frame?
+};
+
+
+void main() {
+    // TODO
+}
\ No newline at end of file

projects/rtx/resources/shaders/raytrace.rmiss

+#version 460
+#extension GL_EXT_ray_tracing : require
+
+void main() {
+
+}