Mark the PerformanceMetrics methods as overrides of IPlugin

[28/34] Building CXX object PerformanceMetrics/CMakeFiles/ThunderPerformanceMetrics.dir/PerformanceMetrics.cpp.o
FAILED: PerformanceMetrics/CMakeFiles/ThunderPerformanceMetrics.dir/PerformanceMetrics.cpp.o 
/Applications/Xcode_15.4.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++ -DPROCESSCONTAINERS_ENABLED=1 -DTHUNDER_PLATFORM_PC_UNIX=1 -DThunderPerformanceMetrics_EXPORTS -DWARNING_REPORTING_ENABLED -D_TRACE_LEVEL=0 -D__CORE_MESSAGING__ -D__CORE_NO_WCHAR_SUPPORT__ -D__CORE_WARNING_REPORTING__ -isystem /Users/runner/work/ThunderNanoServicesRDK/ThunderNanoServicesRDK/Debug/install/usr/include/Thunder -isystem /Users/runner/work/ThunderNanoServicesRDK/ThunderNanoServicesRDK/Debug/install/usr/include -isystem /Users/runner/work/ThunderNanoServicesRDK/ThunderNanoServicesRDK/Debug/install/usr/include/Thunder/processcontainers -Wall -Wextra -Wpedantic -Werror -g -std=gnu++11 -arch arm64 -isysroot /Applications/Xcode_15.4.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX14.5.sdk -fPIC -fvisibility=hidden -fvisibility-inlines-hidden -O0 -g -MD -MT PerformanceMetrics/CMakeFiles/ThunderPerformanceMetrics.dir/PerformanceMetrics.cpp.o -MF PerformanceMetrics/CMakeFiles/ThunderPerformanceMetrics.dir/PerformanceMetrics.cpp.o.d -o PerformanceMetrics/CMakeFiles/ThunderPerformanceMetrics.dir/PerformanceMetrics.cpp.o -c /Users/runner/work/ThunderNanoServicesRDK/ThunderNanoServicesRDK/ThunderNanoServicesRDK/PerformanceMetrics/PerformanceMetrics.cpp
In file included from /Users/runner/work/ThunderNanoServicesRDK/ThunderNanoServicesRDK/ThunderNanoServicesRDK/PerformanceMetrics/PerformanceMetrics.cpp:20:
/Users/runner/work/ThunderNanoServicesRDK/ThunderNanoServicesRDK/ThunderNanoServicesRDK/PerformanceMetrics/PerformanceMetrics.h:667:30: error: 'Initialize' overrides a member function but is not marked 'override' [-Werror,-Winconsistent-missing-override]
        virtual const string Initialize(PluginHost::IShell* service);
                             ^
/Users/runner/work/ThunderNanoServicesRDK/ThunderNanoServicesRDK/Debug/install/usr/include/Thunder/plugins/IPlugin.h:81:30: note: overridden virtual function is here
        virtual const string Initialize(PluginHost::IShell* shell) = 0;
                             ^
In file included from /Users/runner/work/ThunderNanoServicesRDK/ThunderNanoServicesRDK/ThunderNanoServicesRDK/PerformanceMetrics/PerformanceMetrics.cpp:20:
/Users/runner/work/ThunderNanoServicesRDK/ThunderNanoServicesRDK/ThunderNanoServicesRDK/PerformanceMetrics/PerformanceMetrics.h:673:22: error: 'Deinitialize' overrides a member function but is not marked 'override' [-Werror,-Winconsistent-missing-override]
        virtual void Deinitialize(PluginHost::IShell* service);
                     ^
/Users/runner/work/ThunderNanoServicesRDK/ThunderNanoServicesRDK/Debug/install/usr/include/Thunder/plugins/IPlugin.h:90:22: note: overridden virtual function is here
        virtual void Deinitialize(PluginHost::IShell* shell) = 0;
                     ^
In file included from /Users/runner/work/ThunderNanoServicesRDK/ThunderNanoServicesRDK/ThunderNanoServicesRDK/PerformanceMetrics/PerformanceMetrics.cpp:20:
/Users/runner/work/ThunderNanoServicesRDK/ThunderNanoServicesRDK/ThunderNanoServicesRDK/PerformanceMetrics/PerformanceMetrics.h:677:24: error: 'Information' overrides a member function but is not marked 'override' [-Werror,-Winconsistent-missing-override]
        virtual string Information() const;
                       ^
/Users/runner/work/ThunderNanoServicesRDK/ThunderNanoServicesRDK/Debug/install/usr/include/Thunder/plugins/IPlugin.h:97:24: note: overridden virtual function is here
        virtual string Information() const = 0;
                       ^
3 errors generated.

PerformanceMetrics/PerformanceMetrics.h

@@ -664,17 +664,17 @@ POP_WARNING()
         // If there is an error, return a string describing the issue why the initialisation failed.
         // The Service object is *NOT* reference counted, lifetime ends if the plugin is deactivated.
         // The lifetime of the Service object is guaranteed till the deinitialize method is called.
-        virtual const string Initialize(PluginHost::IShell* service);
+        virtual const string Initialize(PluginHost::IShell* service) override;
 
         // The plugin is unloaded from Thunder. This is call allows the module to notify clients
         // or to persist information if needed. After this call the plugin will unlink from the service path
         // and be deactivated. The Service object is the same as passed in during the Initialize.
         // After theis call, the lifetime of the Service object ends.
-        virtual void Deinitialize(PluginHost::IShell* service);
+        virtual void Deinitialize(PluginHost::IShell* service) override;
 
         // Returns an interface to a JSON struct that can be used to return specific metadata information with respect
         // to this plugin. This Metadata can be used by the MetData plugin to publish this information to the ouside world.
-        virtual string Information() const;
+        virtual string Information() const override;
 
     private: