Add RentedSeStringBuilder

Co-authored-by: Soreepeong <3614868+Soreepeong@users.noreply.github.com>

Dalamud/Utility/RentedSeStringBuilder.cs

@@ -0,0 +1,19 @@
+using Lumina.Text;
+
+namespace Dalamud.Utility;
+
+/// <summary>
+/// Provides a temporarily rented <see cref="SeStringBuilder"/> from a shared pool.
+/// </summary>
+public readonly struct RentedSeStringBuilder() : IDisposable
+{
+    /// <summary>
+    /// Gets the rented <see cref="SeStringBuilder"/> value from the shared pool.
+    /// </summary>
+    public SeStringBuilder Builder { get; } = SeStringBuilder.SharedPool.Get();
+
+    /// <summary>
+    /// Returns the rented <see cref="SeStringBuilder"/> to the shared pool.
+    /// </summary>
+    public void Dispose() => SeStringBuilder.SharedPool.Return(this.Builder);
+}