[#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/IContext.cs

@@ -0,0 +1,11 @@
+namespace FrostFS.SDK.ClientV2.Parameters;
+
+public interface IContext
+{
+    /// <summary>
+    /// The method call can be extended with additional behavior like canceling by timeout or user's request,
+    /// callbacks, interceptors.
+    /// </summary>
+    /// <value>Additional parameters for calling the method</value>
+    Context? Context { get; set; }
+}