[#26] All: Remove V2 from naming

Rename project, namespaces and class names

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

src/FrostFS.SDK.Client/Mappers/Status.cs

@@ -0,0 +1,18 @@
+using System;
+
+namespace FrostFS.SDK.Client.Mappers.GRPC;
+
+public static class StatusMapper
+{
+    public static FrostFsResponseStatus ToModel(this Status.Status status)
+    {
+        if (status is null)
+            return new FrostFsResponseStatus(FrostFsStatusCode.Success);
+
+        var codeName = Enum.GetName(typeof(FrostFsStatusCode), status.Code);
+
+        return codeName is null
+            ? throw new ArgumentException($"Unknown StatusCode. Value: '{status.Code}'.")
+            : new FrostFsResponseStatus((FrostFsStatusCode)status.Code, status.Message);
+    }
+}