common/telemetry: Migrate namespace into the Common namespace

Migrates the Telemetry namespace into the Common namespace to make the
code consistent with the rest of our common code.

src/core/hle/service/apt/apt.cpp

@@ -230,8 +230,8 @@ void Module::APTInterface::GetSharedFont(Kernel::HLERequestContext& ctx) {
     IPC::RequestBuilder rb = rp.MakeBuilder(2, 2);
 
     // Log in telemetry if the game uses the shared font
-    apt->system.TelemetrySession().AddField(Telemetry::FieldType::Session, "RequiresSharedFont",
-                                            true);
+    apt->system.TelemetrySession().AddField(Common::Telemetry::FieldType::Session,
+                                            "RequiresSharedFont", true);
 
     if (!apt->shared_font_loaded) {
         // On real 3DS, font loading happens on booting. However, we load it on demand to coordinate