Add support for Microsoft.Testing.Platform

[Tyrrrz]

Closes #41

Based on #43 by @Evangelink

[Copilot]

Pull Request Overview

Migrates the logger from VSTest to Microsoft.Testing.Platform, replacing the VSTest logger with a Testing Platform extension that reports to GitHub Actions.

• Introduces a TestReporter extension (data consumer and session lifetime handler) with command-line options.
• Updates summary/annotation generation and internal models (TestOutcome, TestResult, TestDefinition), removing VSTest-specific code.
• Adjusts the template and statistics to align with the new outcome model.

Reviewed Changes

Copilot reviewed 25 out of 25 changed files in this pull request and generated 8 comments.

Show a summary per file

File	Description
GitHubActionsTestLogger/Utils/Extensions/TestRunCriteriaExtensions.cs	Removed VSTest-specific test run settings parsing.
GitHubActionsTestLogger/Utils/Extensions/TestResultExtensions.cs	Removed VSTest-specific source info parsing and stack frame logic.
GitHubActionsTestLogger/Utils/Extensions/TestCaseExtensions.cs	Removed VSTest-specific name parsing helpers.
GitHubActionsTestLogger/Utils/Extensions/TestPlatformExtensions.cs	Adds helper to read single CLI option arguments from Microsoft.Testing.Platform.
GitHubActionsTestLogger/TestingPlatformBuilderHook.cs	Adds Testing Platform builder hook to register GitHub reporting.
GitHubActionsTestLogger/TestSummaryTemplate.cshtml	Switches to new TestOutcome enum (uses None vs NotFound) and cleans up imports.
GitHubActionsTestLogger/TestRunStatistics.cs	Aligns overall outcome with new enum (removes NotFound branch).
GitHubActionsTestLogger/TestResult.cs	New internal model for test results.
GitHubActionsTestLogger/TestReporterOptionsProvider.cs	Defines CLI options and validation for the new reporter.
GitHubActionsTestLogger/TestReporterOptions.cs	New options for reporter and resolver from CLI.
GitHubActionsTestLogger/TestReporterExtension.cs	Extension metadata and enablement.
GitHubActionsTestLogger/TestReporterContext.cs	Core context for formatting annotations and writing the summary.
GitHubActionsTestLogger/TestReporter.cs	Implements IDataConsumer and ITestSessionLifetimeHandler to report results.
GitHubActionsTestLogger/TestOutcome.cs	New internal TestOutcome enum and mapping from Testing Platform states.
GitHubActionsTestLogger/TestLoggerOptions.cs	Removed old VSTest logger options.
GitHubActionsTestLogger/TestLoggerContext.cs	Removed old VSTest logger context.
GitHubActionsTestLogger/TestLogger.cs	Removed old VSTest logger.
GitHubActionsTestLogger/TestDefinition.cs	New internal model for test definitions and metadata.
GitHubActionsTestLogger/GitHubWorkflow.cs	Class made internal; used by reporter/summary.
GitHubActionsTestLogger/GitHubReportExtensions.cs	Registers reporter and options provider in the TestApplicationBuilder.
GitHubActionsTestLogger/GitHubActionsTestLogger.csproj	Replaces VSTest package with Microsoft.Testing.Platform.
GitHubActionsTestLogger.Tests/*	Updates tests to use TestReporterContext and TestReporterOptions.

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[codecov]

Codecov Report

❌ Patch coverage is 84.85981% with 81 lines in your changes missing coverage. Please review.
✅ Project coverage is 85.03%. Comparing base (177dcb6) to head (423a9d9).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
GitHubActionsTestLogger/MtpLogger.cs	78.20%	9 Missing and 8 partials ⚠️
...itHubActionsTestLogger/MtpLoggerOptionsProvider.cs	82.55%	12 Missing and 3 partials ⚠️
...ctionsTestLogger/Utils/Extensions/MtpExtensions.cs	75.92%	3 Missing and 10 partials ⚠️
GitHubActionsTestLogger/VsTestLogger.cs	88.42%	5 Missing and 6 partials ⚠️
...onsTestLogger/Utils/Extensions/VsTestExtensions.cs	72.72%	2 Missing and 4 partials ⚠️
...itHubActionsTestLogger/GitHub/GitHubEnvironment.cs	88.57%	1 Missing and 3 partials ⚠️
GitHubActionsTestLogger/GitHub/GitHubWorkflow.cs	87.09%	1 Missing and 3 partials ⚠️
...ctionsTestLogger/Reporting/TestReportingContext.cs	96.29%	0 Missing and 2 partials ⚠️
...itHubActionsTestLogger/Reporting/TestRunEndInfo.cs	84.61%	0 Missing and 2 partials ⚠️
...onsTestLogger/Reporting/TestSummaryTemplate.cshtml	91.30%	1 Missing and 1 partial ⚠️
... and 4 more

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #53      +/-   ##
==========================================
+ Coverage   84.85%   85.03%   +0.17%     
==========================================
  Files          16       23       +7     
  Lines         449      735     +286     
  Branches       57       88      +31     
==========================================
+ Hits          381      625     +244     
- Misses         40       57      +17     
- Partials       28       53      +25     

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