Set realtime priorities if available

This significantly reduces the latency with no real drawbacks from what
I've noticed. Wineserver is still run using the normal scheduling
policies because from my testing running that with realtime priority
that can actually increase latencies, although doing so will greatly
reduce the variance in processing time.

src/wine-host/group-host.cpp

@@ -18,10 +18,11 @@
 
 #include <iostream>
 
-// Generated inside of build directory
+// Generated inside of the build directory
 #include <src/common/config/config.h>
 #include <src/common/config/version.h>
 
+#include "../common/utils.h"
 #include "bridges/group.h"
 #include "bridges/vst2.h"
 
@@ -39,6 +40,8 @@
  * Wine 5.7: https://bugs.winehq.org/show_bug.cgi?id=49138
  */
 int __cdecl main(int argc, char* argv[]) {
+    set_realtime_priority();
+
     // Instead of directly hosting a plugin, this process will receive a UNIX
     // domain socket endpoint path that it should listen on to allow yabridge
     // instances to spawn plugins in this process.