feat(DirectorySearchQuery): create to handle directory search

- define query model

src/DigitalData.ActiveDirectory/DirectorySearchQuery.cs

@@ -0,0 +1,27 @@
+using MediatR;
+using Microsoft.Extensions.Options;
+using System.DirectoryServices;
+
+namespace DigitalData.ActiveDirectory;
+
+public record DirectorySearchQuery(string? Filter = null, SearchScope Scope = SearchScope.Subtree, int SizeLimit = 5000) : IRequest
+{
+    public Action<DirectorySearcher>? Options { get; set; }
+}
+
+[System.Diagnostics.CodeAnalysis.SuppressMessage("Interoperability", "CA1416:Validate platform compatibility", Justification = "<Pending>")]
+public class DirectorySearchQueryHandler(IOptions<ActiveDirectoryOptions> options) : IRequestHandler<DirectorySearchQuery>
+{
+    
+    public DirectoryEntry DirectoryEntry => new ()
+    {
+        Path = options.Value.Path,
+        Username = options.Value.Username,
+        Password = options.Value.Password
+    };
+
+    public Task Handle(DirectorySearchQuery request, CancellationToken cancellationToken)
+    {
+        throw new NotImplementedException();
+    }
+}