Add VS2026 support

[GeorgeS2019]

Microsoft how has a series of youtube tutorial how to do Godot in C# using VS Code.
We need to explore how VS2026 could be supported better.

https://www.youtube.com/watch?v=MmuiwY_tiEo

@MikeSchulze

This issue revisit VS2026 for Godot 4 and explores what are the challenges to implement and more importantly what are new opportunities in VS2026 for Godot4 that we miss.

[GeorgeS2019]

The most significant improvements in Visual Studio 2026 compared to Visual Studio 2022 are its deep AI integration, faster performance, modernized design, and tighter alignment with cloud-native and .NET 10 workflows.

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🚀 Key Improvements in Visual Studio 2026 vs 2022

1. AI-First IDE

• VS2022: GitHub Copilot was an optional extension.
• VS2026: AI is built-in and deeply integrated across the IDE.
  • Full-featured AI chat panel with project-wide awareness.
  • Adaptive Paste: automatically formats and integrates pasted code into context.
  • AI suggests tests, documentation, performance, and security insights before commits C# Corner ABP Framework.

2. Performance Enhancements

• Faster solution load and quicker builds/debugging.
• Optimized for both x64 and Arm64 architectures.
• Improved first launch times compared to VS2022 ABP Framework.

3. New Update Model

• Introduction of the Insiders Channel (replacing Preview Channel).
  • Provides monthly updates and early access to new features and fixes.
  • More agile servicing compared to VS2022’s slower preview cycles trevoirwilliams.com ABP Framework.

4. Cloud-Native & Language Integration

• Tight integration with .NET 10 and C# 14.
• Enhanced support for cloud-native workflows, containers, and microservices.
• Better tooling for Azure-native development C# Corner.

5. Modernized Design & Developer Experience

• Refined UI/UX for clarity and productivity.
• Improved solution explorer and debugging panels.
• More intuitive cross-platform development support (Windows, web, mobile, cloud) C# Corner trevoirwilliams.com.

6. Smarter AI Assistant ("DevCompanion")

• Unlike VS2022’s limited Copilot Labs, VS2026’s AI assistant can analyze the entire codebase.
• Example: It can detect subtle bugs across middleware or project layers, not just in the current file DEV Community.

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📊 Comparison Table

Feature	VS2022	VS2026
AI Integration	Optional Copilot extension	Built-in, project-aware AI
AI Chat	Limited (Copilot Labs)	Full-featured, contextual
Adaptive Paste	Not available	Available
Performance	Improved over VS2019	Faster load, builds, debugging
Architecture Support	x64 focus	Optimized for x64 + Arm64
Update Model	Preview Channel	Insiders Channel (monthly updates)
Language Support	.NET 6, C# 10	.NET 10, C# 14
Cloud-Native Workflows	Basic Azure support	Deep cloud-native integration
Design/UI	Modernized from VS2019	Further refined, streamlined

Sources: C# Corner trevoirwilliams.com DEV Community ABP Framework

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👉 In short, Visual Studio 2026 transforms the IDE into an AI-first environment, making coding faster, smarter, and more cloud-native than ever before.

[MaxSavenkov]

VS 2026 no longer provides Mono.Debugging.VisualStudio package. This extensions needs to be rewritten to use Debugger Adapter Protocol, like VS Code extension already does to work with Visual Studio 2026.