Add show_dsc_resource() and enable list_dsc_resource([adapter]) for MCP

[SteveL-MSFT]

PR Summary

As discussed in #1093 (comment) add an optional parameter to list_dsc_resource([adapter]) instead of having a separate tool for listing adapted resources. Add show_dsc_resource() tool to get detailed information including schema for a dsc resource.

PR Context

Part of #1093

[Copilot]

Pull Request Overview

This PR consolidates DSC resource listing functionality by adding an optional adapter parameter to the list_dsc_resources tool and introduces a new show_dsc_resource tool for retrieving detailed resource information including schemas. The changes eliminate the separate list_adapted_resources tool in favor of a unified approach.

• Replaces list_adapted_resources with an optional adapter parameter in list_dsc_resources
• Adds show_dsc_resource tool to get detailed information including schema for specific DSC resources
• Updates tests to validate the consolidated functionality and new tool

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
dsc/tests/dsc_mcp.tests.ps1	Updates test cases to validate consolidated resource listing and new show resource functionality
dsc/src/mcp/show_dsc_resource.rs	Implements new tool for getting detailed DSC resource information including schema
dsc/src/mcp/mod.rs	Removes list_adapted_resources module and adds show_dsc_resource module
dsc/src/mcp/mcp_server.rs	Updates tool router to use new consolidated tools
dsc/src/mcp/list_dsc_resources.rs	Adds optional adapter parameter to support both regular and adapted resource listing
dsc/locales/en-us.toml	Adds localized error messages for the new functionality

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