[#17] Client: Add extra parameter

API methods' parameters types with optional session, polling settings, xHeaders etc. and corresponding handlers have been added

Signed-off-by: Pavel Gross <p.gross@yadro.com>

src/FrostFS.SDK.ClientV2/Parameters/PrmGetContainer.cs

@@ -0,0 +1,17 @@
+using System.Collections.Specialized;
+using FrostFS.SDK.ModelsV2;
+
+namespace FrostFS.SDK.ClientV2.Parameters;
+
+public sealed class PrmGetContainer(ContainerId containerId, Context? ctx = null) : IContext
+{
+    public ContainerId ContainerId { get; set; } = containerId;
+
+    /// <summary>
+    /// FrostFS request X-Headers
+    /// </summary>
+    public NameValueCollection XHeaders { get; set; } = [];
+
+    /// <inheritdoc />
+    public Context? Context { get; set; } = ctx;
+}