[Light Switch] Adding telemetry events (#44241)

Adding events to track the following:
<table style="width:100%">
  <tr>
    <th>Event Name</th>
    <th>Description</th>
<th>Data collected</th>
  </tr>
  <tr>
    <td>Microsoft.PowerToys.LightSwitch_EnableLightSwitch</td>
    <td>Triggered when Light Switch is enabled or disabled.</td>
<td>Whether the module is enabled or disabled (bool)</td>
  </tr>
  <tr>
    <td>Microsoft.PowerToys.LightSwitch_ShortcutInvoked</td>
    <td>Occurs when the shortcut for Light Switch is invoked.</td>
<td></td>
  </tr>
  <tr>
    <td>Microsoft.PowerToys.LightSwitch_ScheduleModeToggled</td>
<td>Occurs when a new schedule mode is selected for Light Switch.</td>
<td>The new mode selected (string)</td>
  </tr>
  <tr>
    <td>Microsoft.PowerToys.LightSwitch_ThemeTargetChanged</td>
<td>Occurs when the options for targeting the system or apps is
updated.</td>
<td>The new options selected (two bools)</td>
  </tr>
</table>

The above events that are related to Light Switch settings are tracked
in the "LoadSettings" function inside the service but only if the value
has changed. The Enabled event as well as the Shortcut event are tracked
in the module interface.

src/modules/LightSwitch/LightSwitchService/LightSwitchService.cpp

@@ -14,6 +14,7 @@
 #include "LightSwitchStateManager.h"
 #include <LightSwitchUtils.h>
 #include <NightLightRegistryObserver.h>
+#include <trace.h>
 
 SERVICE_STATUS g_ServiceStatus = {};
 SERVICE_STATUS_HANDLE g_StatusHandle = nullptr;
@@ -357,6 +358,8 @@ DWORD WINAPI ServiceWorkerThread(LPVOID lpParam)
 
 int APIENTRY wWinMain(HINSTANCE, HINSTANCE, PWSTR, int)
 {
+    Trace::LightSwitch::RegisterProvider();
+
     if (powertoys_gpo::getConfiguredLightSwitchEnabledValue() == powertoys_gpo::gpo_rule_configured_disabled)
     {
         wchar_t msg[160];
@@ -364,12 +367,14 @@ int APIENTRY wWinMain(HINSTANCE, HINSTANCE, PWSTR, int)
             msg,
             L"Tried to start with a GPO policy setting the utility to always be disabled. Please contact your systems administrator.");
         Logger::info(msg);
+        Trace::LightSwitch::UnregisterProvider();
         return 0;
     }
-
     int argc = 0;
     LPWSTR* argv = CommandLineToArgvW(GetCommandLineW(), &argc);
     int rc = _tmain(argc, argv); // reuse your existing logic
     LocalFree(argv);
+
+    Trace::LightSwitch::UnregisterProvider();
     return rc;
 }