Refactor data providers and update abstractions

- Removed obsolete data providers: `AnchorCollectionDataProvider`, `ContentsDataProvider`, and others, consolidating logic into new composable providers.
- Added `ComposeDataProviders`, `SelectDataProvider`, and `RelationalDataProvider` for improved flexibility and reusability.
- Introduced `IManySelectionComposableDataProvider` interface to support multiple-node selection.
- Enhanced `UnitDownloader` with more robust progress tracking.
- Updated package references and project dependencies for consistency.
- Improved error handling in `StealthConfig` initialization for better fallback on browser drivers.
- Incremented project version to 2.4.5.

Beam.Api/ApiCall.cs

@@ -3,12 +3,14 @@ using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Net;
+using System.Net.Http;
 using System.Net.Http.Json;
 using System.Text;
 using System.Text.Json;
+using System.Threading;
 using System.Threading.Tasks;
 
-namespace Beam {
+namespace Beam.Api; 
     public class ApiCall(HttpClient client, string uri, HttpMethod method, KeyValuePair<string, string[]>[] headers, object? requestData, object? body, params HashSet<HttpStatusCode> successCodes) {
         public HttpClient Client { get; } = client;
         public object? RequestData { get; } = requestData;
@@ -63,4 +65,3 @@ namespace Beam {
         public static async Task<ApiResponse> Get(HttpClient client, string url, ILoggerFactory factory)
             => await new ApiCall(client, url, HttpMethod.Get, [], null, null).GetResponse(factory.CreateLogger<ApiResponse>());
     }
-}