[#23] Client: Refactoring to optimize memory usage

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

src/FrostFS.SDK.ClientV2/Models/Object/FrostFsObject.cs

@@ -0,0 +1,64 @@
+using System;
+
+namespace FrostFS.SDK;
+
+public class FrostFsObject
+{
+    /// <summary>
+    /// Creates new instance from <c>ObjectHeader</c>
+    /// </summary>
+    /// <param name="header"></param> <summary>
+    public FrostFsObject(FrostFsObjectHeader header)
+    {
+        Header = header;
+    }
+
+    /// <summary>
+    /// Creates new instance with specified parameters
+    /// </summary>
+    /// <param name="container"></param>
+    /// <param name="objectType"></param>
+    public FrostFsObject(FrostFsContainerId container, FrostFsObjectType objectType = FrostFsObjectType.Regular)
+    {
+        Header = new FrostFsObjectHeader(containerId: container, type: objectType);
+    }
+
+    /// <summary>
+    /// Header contains metadata for the object
+    /// </summary>
+    /// <value></value>
+    public FrostFsObjectHeader Header { get; set; }
+
+    /// <summary>
+    /// The value is calculated internally as a hash of ObjectHeader. Do not use pre-calculated value is the object has been changed.
+    /// </summary>
+    public FrostFsObjectId? ObjectId
+    {
+        get; set;
+    }
+
+    /// <summary>
+    /// The size of payload cannot exceed <c>MaxObjectSize</c> value from <c>NetworkSettings</c>
+    /// Used only for PutSingleObject method
+    /// </summary>
+    /// <value>Buffer for output data</value>
+    public byte[] Payload { get; set; } = [];
+
+    /// <summary>
+    /// A payload is obtained via stream reader
+    /// </summary>
+    /// <value>Reader for received data</value>
+    public IObjectReader? ObjectReader { get; set; }
+
+    /// <summary>
+    /// Applied only for the last Object in chain in case of manual multipart uploading
+    /// </summary>
+    /// <param name="largeObject">Parent for multipart object</param>
+    public void SetParent(FrostFsObjectHeader largeObjectHeader)
+    {
+        if (Header?.Split == null)
+            throw new Exception("The object is not initialized properly");
+
+        Header.Split.ParentHeader = largeObjectHeader;
+    }
+}