expose more ncrunch stuff

Author: SimonCropp

src/DiffEngine/ContinuousTestingDetector.cs

@@ -13,12 +13,14 @@ static ContinuousTestingDetector()
             return;
         }
 
-        if (Environment.GetEnvironmentVariable("NCRUNCH") != null &&
-            Environment.GetEnvironmentVariable("NCrunch.IsHighPriority") != "1")
+        if (IsNCrunch && !IsNCrunchExplicitRun)
         {
             Detected = true;
         }
     }
 
+    public static bool IsNCrunchExplicitRun { get; } = Environment.GetEnvironmentVariable("NCrunch.IsHighPriority") == "1";
     public static bool Detected { get; set; }
+    public static bool IsNCrunch { get; } = Environment.GetEnvironmentVariable("NCRUNCH") != null;
+    public static string? NCrunchOriginalProject { get; } = Environment.GetEnvironmentVariable("NCrunch.OriginalProjectPath");
 }

src/Directory.Build.props

@@ -2,7 +2,7 @@
 <Project>
   <PropertyGroup>
     <NoWarn>CS1591;CS0649</NoWarn>
-    <Version>10.4.1</Version>
+    <Version>10.4.2</Version>
     <AssemblyVersion>1.0.0</AssemblyVersion>
     <PackageTags>Testing, Snapshot, Diff, Compare</PackageTags>
     <Description>Launches diff tools based on file extensions. Designed to be consumed by snapshot testing libraries.</Description>