vulkan: Optimize binary ops (#10270)

Reuse the index calculations across all of src0/src1/dst. Add a shader
variant for when src0/src1 are the same dimensions and additional modulus
for src1 aren't needed. Div/mod are slow, so add "fast" div/mod that
have a fast path when the calculation isn't needed or can be done more
cheaply.

ggml/src/vulkan-shaders/concat.comp

@@ -3,6 +3,8 @@
 #include "types.comp"
 #include "generic_binary_head.comp"
 
+layout(local_size_x = 512, local_size_y = 1, local_size_z = 1) in;
+
 void main() {
     const uint idx = gl_GlobalInvocationID.z * 262144 + gl_GlobalInvocationID.y * 512 + gl_GlobalInvocationID.x;
     const int dim = p.param3;