[FEATURE REQ] DynamicData v2 Features

[annelo-msft]

Library name

Azure.Core

Please describe the feature.

• Make it possible to determine the type of a DynamicData property. One proposal is to add Kind to DynamicDataProperty.
• Extend the set of allowed values as described here: https://github.com/Azure/AzureFX/pull/112#discussion_r1283775227
• Add APIs to add/remove elements to/from JSON arrays, per https://github.com/Azure/AzureFX/pull/112#discussion_r1283776273
• Implement IEquatable<DynamicData>
• Add SnakeCaseUpper to JsonPropertyNames enum
• Expand to types beyond JSON
• Add [RequiresUnreferencedCode] attribute for AOT, per Move DynamicData into Azure.Core package #35777 (comment)
• Make MutableJsonDocument public
  • Implement indexer on MutableJsonElement
  • Improve performance of the type
  • Add WriteToAsync methods
• Add cast from DynamicJson to MutableJsonDocument and MutableJsonElement for performance (to allow bypassing dynamic bindings)
• Enable cast to IDictionary

This issue replaces:

• DynamicData - follow ups from April Azure.Core arch board review (target May release) #35944
• Add features to DynamicJson #33856

[annelo-msft]

@jsquire shared this feature request for MJD, which might be helpful in implementing support for several of the above items:

doc.SetObjectProperty("test"); // test = {}
doc.GetProperty("test").SetProperty("name", "Jesse"); // test = { "name":"Jesse" }

[jsquire]

It would also be good to have the same support for creating new array-based properties which would then work with the existing members. Something like:

doc.SetArrayProperty("test");  // test = []