ElevenLabs-DotNet-Proxy 3.5.2

[StephenHodgson]

• Forward the content and headers from the backend service to the client, preserving the original response details.

[Copilot]

Pull Request Overview

This PR updates the proxy behavior to forward backend response headers and content details while improving handling of streaming responses and aligning project version metadata.

• Adds forwarding of ContentLength and ContentType from the backend response in EndpointRouteBuilder.cs
• Enhances streaming content handling with a case-insensitive check in EndpointRouteBuilder.cs
• Updates the project’s version and release notes in the csproj to reflect version 3.5.2

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
ElevenLabs-DotNet-Proxy/Proxy/EndpointRouteBuilder.cs	Forwards additional response headers and adjusts the event stream check
ElevenLabs-DotNet-Proxy/ElevenLabs-DotNet-Proxy.csproj	Updates the version and release notes for the new release

Comments suppressed due to low confidence (1)

ElevenLabs-DotNet-Proxy/ElevenLabs-DotNet-Proxy.csproj:27

• The PackageReleaseNotes section includes outdated version information alongside the current release notes for 3.5.2. Consider removing or updating the legacy version entries to avoid confusion.

Version 3.5.1