Housekeeping

[HeDo88TH]

• Added syntactic sugar
• Minor code refactor and cleanup
• Upgrade to .NET 9
• Upgraded nuget packages
• Got rid of FluentAssertions. Welcome Shoudly!
• Version bump to v1.1.0

[Copilot]

Pull Request Overview

This PR performs a comprehensive upgrade and refactoring of the Obj2Tiles project, upgrading from .NET 8 to .NET 9 while implementing modern C# syntax patterns. The changes include dependency updates, code modernization using collection expressions and simplified syntax, and a switch from FluentAssertions to Shouldly for testing.

• Upgraded .NET framework from 8.0 to 9.0 across all projects and CI workflows
• Modernized C# syntax using collection expressions ([]) and simplified patterns
• Replaced FluentAssertions with Shouldly testing library and updated NuGet packages

Reviewed Changes

Copilot reviewed 30 out of 30 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
Multiple .csproj files	Updated target framework from net8.0 to net9.0 and version bumps
Multiple .cs files	Applied modern C# syntax including collection expressions and simplified patterns
Test files	Migrated from FluentAssertions to Shouldly assertions
Publish profiles	Updated framework references for deployment targets
GitHub workflows	Updated CI/CD to use .NET 9 and newer action versions

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}