Implement process and thread priority adjustments (#691)

src/platform/linux/misc.cpp

@@ -153,6 +153,18 @@ bp::child run_unprivileged(const std::string &cmd, boost::filesystem::path &work
   }
 }
 
+void adjust_thread_priority(thread_priority_e priority) {
+  // Unimplemented
+}
+
+void streaming_will_start() {
+  // Nothing to do
+}
+
+void streaming_will_stop() {
+  // Nothing to do
+}
+
 namespace source {
 enum source_e : std::size_t {
 #ifdef SUNSHINE_BUILD_CUDA