feat: add deferred response buffering, TableDataProvider, and stealth improvements

- ApiResponse: add readToBuffer option to defer/stream body instead of eagerly buffering
- TableDataProvider: implement HTML table parser with per-column provider support
- StealthConfig: add 10s page load timeout and copyCookiesFrom parameter for cookie sharing
- StealthUnitDownloader: catch WebDriverTimeoutException on navigation, log warning instead of throwing
- Bump version to 2.9.0

Beam.Api/ApiCalls.cs

@@ -33,7 +33,7 @@ namespace Beam.Api;
                 // sequential
                 var sequential = new List<ApiResponse>(_calls.Count);
                 foreach (var call in _calls)
-                    sequential.Add(await call.GetResponse(logger, tries, ct));
+                    sequential.Add(await call.GetResponse(logger, tries, true, ct));
                 return sequential;
             }
 
@@ -43,7 +43,7 @@ namespace Beam.Api;
                 _calls.Select((c, i) => (call: c, idx: i)),
                 new ParallelOptions { MaxDegreeOfParallelism = _maxDegree, CancellationToken = ct },
                 async (item, token) => {
-                    var response = await item.call.GetResponse(logger, tries, token);
+                    var response = await item.call.GetResponse(logger, tries, true, token);
                     bag.Add((item.idx, response));
                 });