Allow TypeSpec project path to be a github link

[smw-ms]

Resolves: #13488

[Copilot]

Pull request overview

This PR adds support for using GitHub URLs as TypeSpec project paths in addition to local filesystem paths. The implementation allows users to reference TypeSpec projects directly via URLs like https://github.com/Azure/azure-rest-api-specs/blob/main/specification/service/Service.Management.

Key changes:

• Added URL validation for GitHub spec repository URLs with pattern matching
• Extended core TypeSpec helper methods to detect and handle URL inputs
• Enhanced management plane detection to infer from URL path patterns when config files aren't accessible
• Comprehensive test coverage for URL-based operations

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
tools/azsdk-cli/Azure.Sdk.Tools.Cli/Helpers/TypeSpecHelper.cs	Added URL detection and validation logic, extended existing methods to handle both local paths and GitHub URLs
tools/azsdk-cli/Azure.Sdk.Tools.Cli.Tests/Helpers/TypeSpecHelperTests.cs	Added comprehensive test cases for URL validation, management plane detection, and path operations with URLs
tools/azsdk-cli/Azure.Sdk.Tools.Cli.Tests/Tools/ReleasePlan/ReleasePlanToolTests.cs	Replaced mock TypeSpecHelper with real implementation and added integration test using GitHub URL

[Copilot]

Pull request overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated 5 comments.