moved some Configuration interfaces

Author: arturcic

src/GitVersion.Core/Core/Exceptions/BugException.cs renamed to src/GitVersion.Abstractions/Common/Exceptions/BugException.cs

@@ -3,7 +3,7 @@ namespace GitVersion.Configuration;
 public interface IConfigurationFileLocator
 {
     bool TryGetConfigurationFile(string? workingDirectory, string? projectRootDirectory, out string? configFilePath);
-    GitVersionConfiguration ReadConfiguration(string? configFilePath);
+    IGitVersionConfiguration ReadConfiguration(string? configFilePath);
     IReadOnlyDictionary<object, object?>? ReadOverrideConfiguration(string? configFilePath);
     void Verify(string? workingDirectory, string? projectRootDirectory);
 }