chore: refactored samples folder and converted solution to using .slnx

[mishael-o]

Summary

• Switch the repo to src/Blazing.Mvvm.slnx as the main solution entry point and update CI/release/test scripts for the new layout.
• Reorganize projects under src/Libraries and src/Tests, and move the sample apps from src/samples to repo-root samples with shared sample build/package props and per-sample .slnx files.
• Add the BLAZMVVM0021 EventCallback two-way binding analyzer, including its code fix, analyzer docs/release notes, sample coverage, and analyzer tests.
• Fix the README.md filename casing for Linux CI and clean up analyzer/docs/sample markdown links and related documentation.

Resolves #38

[Copilot]

Pull request overview

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This PR restructures the repository’s sample projects (moving them to a top-level samples/ folder) and standardizes solution entry points by migrating from legacy .sln/.slnf usage to .slnx, while centralizing sample build/package configuration under samples/Directory.* props.

Changes:

• Updated sample project references to point at src/Libraries/* after moving samples to repo-root samples/.
• Added samples/Directory.Build.props, samples/Directory.Packages.props, and a local override example to centralize build/package settings for samples.
• Introduced per-sample .slnx solution entry points and updated CI/release workflows/scripts to build via .slnx.

Reviewed changes

Copilot reviewed 29 out of 779 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
samples/HybridSamples/HybridSample.MAUI/HybridSample.MAUI.csproj	Updates project references to new library paths under src/Libraries.
samples/HybridSamples/HybridSample.Avalonia/HybridSample.Avalonia.csproj	Updates library project reference path and adds an extra package reference.
samples/Directory.Packages.props	Adds sample-level central package import that chains to src/Directory.Packages.props.
samples/Directory.Build.props	Adds sample-level build props that import src/Directory.Build.props and an optional local override.
samples/Directory.Build.local.props.example	Provides a template for developer-local sample build overrides.
samples/Blazing.SubpathHosting.Server/Blazing.SubpathHosting.Server.slnx	Adds .slnx entry point for the sample.
samples/Blazing.SubpathHosting.Server/Blazing.SubpathHosting.Server.csproj	Updates library project reference path under src/Libraries.
samples/Blazing.Mvvm.Security.Wasm/Blazing.Mvvm.Security.Wasm.slnx	Adds .slnx entry point for the sample.
samples/Blazing.Mvvm.Security.Wasm/Blazing.Mvvm.Security.Wasm.csproj	Updates library project reference path under src/Libraries.
samples/Blazing.Mvvm.Sample.WebApp/Blazing.Mvvm.Sample.WebApp/Blazing.Mvvm.Sample.WebApp.csproj	Updates library project reference path under src/Libraries.
samples/Blazing.Mvvm.Sample.WebApp/Blazing.Mvvm.Sample.WebApp.slnx	Adds .slnx entry point (multi-project) for the WebApp sample.
samples/Blazing.Mvvm.Sample.WebApp/Blazing.Mvvm.Sample.WebApp.Client/Blazing.Mvvm.Sample.WebApp.Client.csproj	Updates library project reference path under src/Libraries.
samples/Blazing.Mvvm.Sample.Wasm/Blazing.Mvvm.Sample.Wasm.slnx	Adds .slnx entry point for the sample.
samples/Blazing.Mvvm.Sample.Wasm/Blazing.Mvvm.Sample.Wasm.csproj	Updates library project reference path under src/Libraries.
samples/Blazing.Mvvm.Sample.Server/Blazing.Mvvm.Sample.Server.slnx	Adds .slnx entry point for the sample.
samples/Blazing.Mvvm.Sample.Server/Blazing.Mvvm.Sample.Server.csproj	Updates library project reference path under src/Libraries.
samples/Blazing.Mvvm.Sample.HybridMaui/Blazing.Mvvm.Sample.HybridMaui.slnx	Adds .slnx entry point for the sample.
samples/Blazing.Mvvm.Sample.HybridMaui/Blazing.Mvvm.Sample.HybridMaui.csproj	Updates library project reference paths under src/Libraries.
samples/Blazing.Mvvm.AnalyzerTest/README.md	Updates analyzer-test documentation to reflect BLAZMVVM0021 scope/behavior.
samples/Blazing.Mvvm.AnalyzerTest/Components/Test021Component.razor	Clarifies comment text describing the BLAZMVVM0021 sample pattern.
samples/Blazing.Mvvm.AnalyzerTest/Blazing.Mvvm.AnalyzerTest.slnx	Adds .slnx entry point for the analyzer test sample.
samples/Blazing.Mvvm.AnalyzerTest/Blazing.Mvvm.AnalyzerTest.csproj	Updates project references to new src/Libraries/* paths.
readme.md	Updates TOC formatting, adds/moves links to new samples/ paths, and refreshes documentation sections.
docs/analyzers/BLAZMVVM0021.md	Adds new analyzer documentation for BLAZMVVM0021.
ci-cd-test-run.ps1	Updates local CI test runner to use .slnx and new test project paths.
HISTORY.md	Reworks TOC formatting and updates sample links to new samples/ paths.
.vscode/settings.json	Removes workspace-specific VS Code color customizations.
.github/workflows/release.yml	Updates restore/build/test/pack paths to .slnx and new folder layout.
.github/workflows/ci.yml	Updates restore/build/test paths to .slnx and new test project locations.

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[Copilot]

Pull request overview

Copilot reviewed 29 out of 780 changed files in this pull request and generated 6 comments.

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[gragra33]

Looks good!