Add MCP sample with V2026_01_01_PREVIEW support

[xitzhang]

Description

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• The pull request does not introduce [breaking changes]
• CHANGELOG is updated for new features, bug fixes or other significant changes.
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Testing Guidelines

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[github-actions]

API Change Check

APIView identified API level changes in this PR and created the following API reviews

com.azure:azure-ai-voicelive

[Copilot]

Pull request overview

This pull request adds support for a new service version V2026_01_01_PREVIEW to the Azure VoiceLive SDK and includes an MCP (Model Context Protocol) sample demonstrating external tool integration with MCP servers. Note: The PR title contains a typo ("suppor" instead of "support").

Changes:

• Added V2026_01_01_PREVIEW service version enum to VoiceLiveServiceVersion.java
• Created new MCPSample.java demonstrating MCP server integration, approval workflows, and tool execution
• The sample uses the new preview service version for MCP features

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 5 comments.

File	Description
VoiceLiveServiceVersion.java	Adds V2026_01_01_PREVIEW enum value for the new preview API version
MCPSample.java	New comprehensive sample demonstrating MCP integration with voice conversations, tool calling, approval workflows, and audio processing

Comments suppressed due to low confidence (1)

sdk/ai/azure-ai-voicelive/src/main/java/com/azure/ai/voicelive/VoiceLiveServiceVersion.java:47

• The getLatest() method returns V2025_10_01 but a newer version V2026_01_01_PREVIEW has been added. Consider whether the latest should point to the newest version (even if it's preview) or if the current behavior is intentional to return the latest stable version. The JavaDoc should clarify this behavior.

    public static VoiceLiveServiceVersion getLatest() {
        return V2025_10_01;

[Copilot]

@xitzhang I've opened a new pull request, #47711, to work on those changes. Once the pull request is ready, I'll request review from you.

[Copilot]

@xitzhang I've opened a new pull request, #47712, to work on those changes. Once the pull request is ready, I'll request review from you.