Add Open AI completions create tool

[g2vinay]

Adds azmcp foundry openai create-completion command for generating text completions using Azure OpenAI models deployed in Azure AI Foundry.

Command: azmcp foundry openai create-completion

• Generate text completions with deployed Azure OpenAI models
• Supports credential and key-based authentication
• Configurable temperature and max tokens
• Returns completion text with usage metrics

Key Parameters
--resource-name, --resource-group, --deployment, --prompt-text (required)
--temperature, --max-tokens, --auth-method (optional)

[Copilot]

Pull Request Overview

This PR adds a new OpenAI completions create tool to the Azure MCP server, enabling text generation through Azure OpenAI services. This introduces a complete new AI area with services, commands, and comprehensive testing infrastructure.

• Registers a new AI namespace with OpenAI completion capabilities
• Implements command structure for Azure OpenAI text generation with configurable parameters
• Adds comprehensive unit and live testing infrastructure with Azure resource provisioning

Reviewed Changes

Copilot reviewed 24 out of 24 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
servers/Azure.Mcp.Server/src/Program.cs	Registers the new AI area setup in the main server
servers/Azure.Mcp.Server/src/Azure.Mcp.Server.csproj	Adds project reference to the new AI area
areas/ai/tests/test-resources.json	ARM template for provisioning Azure OpenAI test resources
areas/ai/tests/test-resources.bicep	Bicep template for Azure OpenAI service and deployment setup
areas/ai/tests/test-resources-post.ps1	Post-deployment verification script
areas/ai/tests/AzureMcp.Ai.UnitTests/Commands/OpenAi/OpenAiCompletionsCreateCommandTests.cs	Comprehensive unit tests for the completion command
areas/ai/tests/AzureMcp.Ai.UnitTests/AzureMcp.Ai.UnitTests.csproj	Unit test project configuration
areas/ai/tests/AzureMcp.Ai.LiveTests/AzureMcp.Ai.LiveTests.csproj	Live test project configuration
areas/ai/tests/AzureMcp.Ai.LiveTests/AiCommandTests.cs	Live integration tests against real Azure OpenAI resources
areas/ai/src/AzureMcp.Ai/Services/IAiService.cs	Interface defining completion creation functionality
areas/ai/src/AzureMcp.Ai/Services/AiService.cs	Implementation of Azure OpenAI completion service
areas/ai/src/AzureMcp.Ai/Options/OpenAi/OpenAiCompletionsCreateOptions.cs	Command options for completion parameters
areas/ai/src/AzureMcp.Ai/Options/BaseAiOptions.cs	Base options class for AI commands
areas/ai/src/AzureMcp.Ai/Options/AiOptionDefinitions.cs	Command-line option definitions for AI operations
areas/ai/src/AzureMcp.Ai/Models/CompletionResult.cs	Result models for completion responses
areas/ai/src/AzureMcp.Ai/GlobalUsings.cs	Global using statements for the AI area
areas/ai/src/AzureMcp.Ai/Commands/OpenAi/OpenAiCompletionsCreateCommand.cs	Main command implementation for creating completions
areas/ai/src/AzureMcp.Ai/Commands/BaseAiCommand.cs	Base command class for AI operations
areas/ai/src/AzureMcp.Ai/Commands/AiJsonContext.cs	JSON serialization context for AOT compatibility
areas/ai/src/AzureMcp.Ai/AzureMcp.Ai.csproj	Main AI area project file with dependencies
areas/ai/src/AzureMcp.Ai/AssemblyInfo.cs	Assembly metadata for trimming support
areas/ai/src/AzureMcp.Ai/AiSetup.cs	Area setup class for dependency injection and command registration
Directory.Packages.props	Adds Azure.AI.OpenAI package version
AzureMcp.sln	Adds new AI area projects to the solution

[xiangyan99]

Please update docs.

[joshfree]

Adding Do Not Merge to make it obvious this PR is not ready for review