Adding privacy event tags to each telemetry event. (#2879)

* Adding privacy event tags to each telemetry event.

* Moving Privacy events to Telemetry base, Removing tag values, and fixing namespaces.

* Adding documentation comments to fix style cop errors in release

* UTCReplace_AppSessionGuid boolean property to all C# telemetry events.

* Adding hardcoded version number to boot events.

* Adding reference to telemetry in settings unittest

* Adding Preview Pane events for loading w/ hardcoded version number

* Adding telemetry.h to msi for svg and markdown events

* removing unused explicit interface exception

src/common/Telemetry/TelemetryBase.cs

@@ -4,8 +4,24 @@
 
 using System.Diagnostics.Tracing;
 
-namespace PreviewHandlerCommon.Telemetry
+namespace Microsoft.PowerToys.Telemetry
 {
+    /// <summary>
+    /// Privacy Tag values
+    /// </summary>
+    public enum PartA_PrivTags
+           : ulong
+    {
+        /// <nodoc/>
+        None = 0,
+
+        /// <nodoc/>
+        ProductAndServicePerformance = 0x0u,
+
+        /// <nodoc/>
+        ProductAndServiceUsage = 0x0u,
+    }
+
     /// <summary>
     /// Base class for telemetry events.
     /// </summary>