look for ggml-metal in the same directory as the binary

ggml-metal.metal

@@ -0,0 +1 @@
+llama/ggml-metal.metal

llama/ggml-metal.m

@@ -152,7 +152,7 @@ struct ggml_metal_context * ggml_metal_init(int n_cb) {
 
         //NSString * path = [[NSBundle mainBundle] pathForResource:@"../../examples/metal/metal" ofType:@"metal"];
         NSBundle * bundle = [NSBundle bundleForClass:[GGMLMetalClass class]];
-        NSString * path = [bundle pathForResource:@"llama/ggml-metal" ofType:@"metal"];
+        NSString * path = [bundle pathForResource:@"ggml-metal" ofType:@"metal"];
         fprintf(stderr, "%s: loading '%s'\n", __func__, [path UTF8String]);
 
         NSString * src  = [NSString stringWithContentsOfFile:path encoding:NSUTF8StringEncoding error:&error];