[XABT] introduce $(EnableProfiler) property

Context: dotnet/macios#22685
Context: dotnet/macios#19370

To simplify inclusion of the Mono diagnostics component, the
iOS/macOS/etc. workloads are introducing a new `$(EnableProfiler)`
property.

To align with Android, we can make `$(EnableProfiler)` available and
work the same way as the existing `$(AndroidEnableProfiler)` property.

I documented `$(AndroidEnableProfiler)` (which was missing!), and also
added an entry about the new, `$(EnableProfiler)` property.

Author: jonathanpeppers

Documentation/docs-mobile/building-apps/build-properties.md

@@ -398,6 +398,15 @@ final `.apk`.
 
 This property is `False` by default.
 
+## AndroidEnableProfiler
+
+Required for using `dotnet-trace` or `dotnet-gcdump` in Android
+applications. If set to `true`, it includes the Mono diagnostic
+component in the application. This component is the
+`libmono-component-diagnostics_tracing.so` native library.
+
+This property is `False` by default.
+
 ## AndroidEnableObsoleteOverrideInheritance
 
 A boolean property that determines if bound methods automatically inherit `[Obsolete]`
@@ -1548,6 +1557,18 @@ This property is `False` by default.
 This property is ignored unless the
 [`$(AotAssemblies)`](#aotassemblies) MSBuild property is `True`.
 
+## EnableProfiler
+
+Synonym for the [`$(AndroidEnableProfiler)`](#androidenableprofiler)
+property.
+
+Required for using `dotnet-trace` or `dotnet-gcdump` in Android
+applications. If set to `true`, it includes the Mono diagnostic
+component in the application. This component is the
+`libmono-component-diagnostics_tracing.so` native library.
+
+This property is `False` by default.
+
 ## EnableProguard
 
 A boolean property that determines

src/Xamarin.Android.Build.Tasks/Microsoft.Android.Sdk/targets/Microsoft.Android.Sdk.DefaultProperties.targets

@@ -52,6 +52,7 @@
     <AndroidEnableRestrictToAttributes Condition=" '$(AndroidEnableRestrictToAttributes)' == '' ">obsolete</AndroidEnableRestrictToAttributes>
 
     <!-- Mono components -->
+    <AndroidEnableProfiler Condition=" '$(AndroidEnableProfiler)' == ''">$(EnableProfiler)</AndroidEnableProfiler>
     <AndroidEnableProfiler Condition=" '$(AndroidEnableProfiler)' == ''">false</AndroidEnableProfiler>
 
     <!--