Conversions lambdas record tutorials

[BillWagner]

Fixes #51995

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Internal previews

📄 File	🔗 Preview link
docs/architecture/microservices/microservice-ddd-cqrs-patterns/cqrs-microservice-reads.md	Implement reads/queries in a CQRS microservice
docs/csharp/fundamentals/tutorials/records.md	Use record types tutorial
docs/csharp/fundamentals/types/conversions.md	Type conversions, casting, and boxing
docs/csharp/fundamentals/types/delegates-lambdas.md	docs/csharp/fundamentals/types/delegates-lambdas
docs/csharp/toc.yml	Taken from https://github.com/dotnet/roslyn/wiki/Samples-and-Walkthroughs

[Copilot]

Pull request overview

Restructures the C# Fundamentals “type system” content by adding new concept articles (conversions, delegates/lambdas/events) and relocating the records tutorial into the Fundamentals tutorial set, with TOC and redirect updates.

Changes:

• Add new conceptual articles for conversions and delegates/lambdas/events, including runnable snippet projects.
• Move the records tutorial under docs/csharp/fundamentals/tutorials/ and update snippet projects to target net10.0.
• Update docs/csharp/toc.yml, add a redirect for the removed tutorial path, and adjust an architecture doc link.

Reviewed changes

Copilot reviewed 12 out of 16 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
docs/csharp/tutorials/records.md	Removes old tutorial page (replaced by Fundamentals version).
docs/csharp/toc.yml	Adds new Fundamentals type-system pages and points the records tutorial to its new location.
docs/csharp/fundamentals/types/delegates-lambdas.md	New concept article introducing delegates, lambdas, and events.
docs/csharp/fundamentals/types/conversions.md	New concept article covering conversions, casting, boxing, and parsing.
docs/csharp/fundamentals/types/snippets/delegates-lambdas/delegates-lambdas.csproj	New snippet project for delegates/lambdas/events article.
docs/csharp/fundamentals/types/snippets/delegates-lambdas/Program.cs	New snippet code for delegates/lambdas/events article.
docs/csharp/fundamentals/types/snippets/conversions/conversions.csproj	New snippet project for conversions article.
docs/csharp/fundamentals/types/snippets/conversions/Program.cs	New snippet code for conversions article.
docs/csharp/fundamentals/tutorials/records.md	New records tutorial page under Fundamentals.
docs/csharp/fundamentals/tutorials/snippets/records/record-types.csproj	Updates records tutorial snippet project TFM to net10.0.
docs/csharp/fundamentals/tutorials/snippets/records/Program.cs	New records tutorial sample app driver.
docs/csharp/fundamentals/tutorials/snippets/records/InterimSteps.cs	Adds interim snippet code for records tutorial content.
docs/csharp/fundamentals/tutorials/snippets/records/DegreeDays.cs	Adds record hierarchy and PrintMembers customization used by the tutorial.
docs/csharp/fundamentals/tutorials/snippets/records/DailyTemperature.cs	Adds record struct used by the tutorial.
docs/architecture/microservices/microservice-ddd-cqrs-patterns/cqrs-microservice-reads.md	Updates “Create record types” resource link to the new tutorial location.
.openpublishing.redirection.csharp.json	Adds redirect from the removed records tutorial path to the new Fundamentals tutorial URL.