Generate types from meta model

[TheAngryByrd]

WHAT

🤖 Generated by Copilot at 198ad18

This pull request improves the F# code formatting and testing of the language server protocol library. It updates the .editorconfig file, the test project, and the fantomas tool.

🤖 Generated by Copilot at 198ad18

fantomas renamed F# code gets formatted well Autumn of AST

🔧🆙🧪

WHY

Generates types from the metaModel provided by the LSP spec. Hopefully makes it so we don't have to hand roll as much and can stay up to date easier.

• [x] Generate Structures
• [x] Generate Enumerations
• [x] Generate Type Aliases
• [ ] Generate XML docs *1
• [ ] Check serialization/deserialization

1. Currently their metaModel docs have some stuff but it's not as extensive as use manually copying the docs from the LSP spec page itself.

Maybes:

• [ ] Generate Interfaces/Abstract classes for Requests
• [ ] Generate Interfaces/Abstract classes for Notifications

HOW

🤖 Generated by Copilot at 198ad18

• Rename fantomas-tool to fantomas in dotnet-tools.json to use latest version of F# formatter (link)
• Update TargetFramework to net7.0 in tests/Ionide.LanguageServerProtocol.Tests.fsproj to use latest .NET SDK (link)
• Add GenerateTests.fs to tests/Ionide.LanguageServerProtocol.Tests.fsproj to generate test cases for language server protocol messages (link)
• Add Fabulous.AST package to tests/Ionide.LanguageServerProtocol.Tests.fsproj to work with abstract syntax trees in F# (link)
• Remove fsharp_max_infix_operator_expression setting from .editorconfig to avoid formatting issues with fantomas (link)
• Add new settings to .editorconfig to control formatting of brackets, blank lines, arrays, lists, and lambdas in F# (link)