Add noexcept qualifications in src/common

Apparently this can actually make a difference in some cases, and the
C++ Core Guideliens recommend doing this on all default constructors,
destructors, and all functions that can not throw (and thus also don't
allocate).

src/common/serialization/vst3/plugin-factory-proxy.cpp

@@ -16,18 +16,19 @@
 
 #include "plugin-factory-proxy.h"
 
-Vst3PluginFactoryProxy::ConstructArgs::ConstructArgs() {}
+Vst3PluginFactoryProxy::ConstructArgs::ConstructArgs() noexcept {}
 
 Vst3PluginFactoryProxy::ConstructArgs::ConstructArgs(
-    Steinberg::IPtr<Steinberg::FUnknown> object)
+    Steinberg::IPtr<Steinberg::FUnknown> object) noexcept
     : plugin_factory_args(object) {}
 
-Vst3PluginFactoryProxy::Vst3PluginFactoryProxy(const ConstructArgs&& args)
+Vst3PluginFactoryProxy::Vst3PluginFactoryProxy(
+    const ConstructArgs&& args) noexcept
     : YaPluginFactory3(std::move(args.plugin_factory_args)),
       arguments(std::move(args)){FUNKNOWN_CTOR}
 
       // clang-format just doesn't understand these macros, I guess
-      Vst3PluginFactoryProxy::~Vst3PluginFactoryProxy() {
+      Vst3PluginFactoryProxy::~Vst3PluginFactoryProxy() noexcept {
     FUNKNOWN_DTOR
 }