Disable xUnit's shadow copying of assemblies

xUnit infuriatingly defaults to enable shadow copying of assemblies, which
completely messes up our assembly locations and thus our ability to find modules
such as PSReadLine.

Author: andyleejordan

src/PowerShellEditorServices/Services/PowerShellContext/Session/PSReadLinePromptContext.cs

@@ -89,6 +89,7 @@ internal static bool TryGetPSReadLineProxy(
         {
             readLineProxy = null;
             logger.LogTrace("Attempting to load PSReadLine");
+            Console.WriteLine($"Module path is {_psReadLineTestModulePath}");
             using (var pwsh = PowerShell.Create())
             {
                 pwsh.Runspace = runspace;
@@ -101,6 +102,7 @@ internal static bool TryGetPSReadLineProxy(
                 if (psReadLineType == null)
                 {
                     logger.LogWarning("PSConsoleReadline type not found: {Reason}", pwsh.HadErrors ? pwsh.Streams.Error[0].ToString() : "<Unknown reason>");
+                    Console.WriteLine("Failed to GetType but no PowerShell error");
                     return false;
                 }
 

test/PowerShellEditorServices.Test.E2E/xunit.runner.json

@@ -1,4 +1,6 @@
 {
-  "parallelizeTestCollections": false
+  "parallelizeTestCollections": false,
+  "methodDisplay": "method",
+  "shadowCopy": false
 }
 

test/PowerShellEditorServices.Test/xunit.runner.json

@@ -1,4 +1,5 @@
 {
   "parallelizeTestCollections": false,
-  "methodDisplay": "method"
+  "methodDisplay": "method",
+  "shadowCopy": false
 }