Remove RepositoryUrl from Directory.Build.props since it should be auto-detected

Remove Microsoft.SourceLink.GitHub package references from project files since it's not longer necessary since .NET SDK 8.0

Update copyright year in Directory.Build.props to reflect 2017-2026

Update copyright year in LICENSE file from 2024 to 2026

Add C# coding style and markdown formatting guidelines

Update documentation to clarify package organization and correct technology stack version

Update language version from C# 10 to C# 12 in Directory.Build.props and supersede ADR-0006 with ADR-0007

Update LangVersion to 14 in Directory.Build.props files across benchmarks, samples, tests, and tools

Update Microsoft.Bcl.HashCode and xunit.runner.visualstudio package versions

Update .editorconfig to adjust newline settings for Directory.Packages.props

Refactor GraphDefinitionParameter constructor to use ArgumentOutOfRangeException.ThrowIfNegative for vertexCount validation

Update target framework to net8.0 from net6.0 for samples

Update target frameworks to net462, dropping support of net461

Update SDK version in global.json to 10.0.100

Update almost all package versions in Directory.Packages.props