feat: add support for custom TURN servers in AnamClient configuration

[Gokaysim]

Summary

This MR introduces support for configuring custom TURN servers in the AnamClient setup. It allows developers to define their own TURN/STUN infrastructure instead of relying solely on default provider (Metered).

Motivation

Some organizations have strict network policies or limitations that prevent them from allowing wide IP ranges. Providing the ability to use a custom TURN server has less IPs.

Example Usage

const anamClient = createClient(sessionToken, {
    iceServers: [
      {
        urls: ['turn:turn.example.com:3478'],
        username: 'user',
        credential: 'pass',
      },
    ],
})

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Summary by cubic

Added support for custom TURN/STUN servers in AnamClient. If provided, the client uses your RTCIceServer list instead of the server-provided ICE servers.

• New Features
  • Added iceServers?: RTCIceServer[] to AnamPublicClientOptions.
  • Client prefers iceServers over server-provided ICE servers, with fallback.

^{Written for commit b32620b. Summary will update automatically on new commits.}

[Copilot]

Pull Request Overview

This PR adds support for custom ICE servers by allowing users to specify them via the customTurnServers option in the client configuration. When provided, these custom servers override the default ICE servers received from the backend.

Key Changes:

• Added customTurnServers optional property to AnamPublicClientOptions
• Modified session initialization logic to use custom servers when provided, falling back to server-provided ICE servers

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
src/types/AnamPublicClientOptions.ts	Added optional customTurnServers field to support custom ICE server configuration
src/AnamClient.ts	Implemented logic to use custom ICE servers when provided, refactored ICE server handling with renamed variable

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[Copilot]

The comment refers to 'custom TURN server' (singular) but the property accepts an array of RTCIceServer which can include both STUN and TURN servers. The comment should be updated to 'Use custom ICE servers if provided, otherwise use server-provided ICE servers' for accuracy and consistency with the codebase terminology.

Suggested change

	// Use custom TURN server if provided, otherwise use server-provided ICE servers
	// Use custom ICE servers if provided, otherwise use server-provided ICE servers

[cubic-dev-ai]

No issues found across 2 files

[cubic-dev-ai]

No issues found across 1 file