Update TODO comments to specify research tasks

Clarified TODO comments by marking them as research-related in Decode, ReadAsync, and WriteAsync methods. No functional changes made.

Author: kzdev-net

Source/Src/KZDev.PerfUtils/MemoryStream/Internals/SegmentMemoryStreamSlim.cs

@@ -1836,7 +1836,7 @@ public SegmentMemoryStreamSlim (long maximumCapacity, long capacity, in MemorySt
     /// <inheritdoc />
     public override string Decode (Encoding encoding)
     {
-        //  TODO - Check the current state of the internal buffers and check if we can
+        //  TODO (Research) - Check the current state of the internal buffers and check if we can
         //  decode directly from the buffers rather than copying the data to a new array.
         byte[] bytes = ToArrayInternal(true);
         return encoding.GetString(bytes, 0, bytes.Length);

Source/Src/KZDev.PerfUtils/MemoryStream/MemoryStreamSlim.cs

@@ -1209,7 +1209,7 @@ public override ValueTask<int> ReadAsync (Memory<byte> buffer, CancellationToken
 
         try
         {
-            // TODO - Consider getting an array from the buffer before using span.
+            // TODO (Research) - Consider getting an array from the buffer before using span.
             return ValueTask.FromResult(Read(buffer.Span));
         }
         catch (Exception ex)
@@ -1294,7 +1294,7 @@ public override ValueTask WriteAsync (ReadOnlyMemory<byte> buffer, CancellationT
 
         try
         {
-            // TODO - Consider getting an array from the buffer before using span.
+            // TODO (Research) - Consider getting an array from the buffer before using span.
             Write(buffer.Span);
             return default;
         }