Record more GPU information

This cleans up the logging for GPU discovery a bit, and can
serve as a foundation to report GPU information in a future UX.

server/routes.go

@@ -1065,7 +1065,8 @@ func Serve(ln net.Listener) error {
 
 	// At startup we retrieve GPU information so we can get log messages before loading a model
 	// This will log warnings to the log in case we have problems with detected GPUs
-	_ = gpu.GetGPUInfo()
+	gpus := gpu.GetGPUInfo()
+	gpus.LogDetails()
 
 	return srvr.Serve(ln)
 }