chore: Convert JSON LDValue into the AiConfig Object

[louis-launchdarkly]

Convert JSON LDValue into the AiConfig Object

For ease of discussion, implement only the conversion logic from LDValue (that we will get back from the Feature Flag SDK) to the AiConfig DataModel.

This uses the exception-based short circuiting (similar to https://github.com/launchdarkly/dotnet-core/blob/6774539af1a2f87b96ae3e647fdcdc5663c791ab/pkgs/sdk/server-ai/src/LdAiClient.cs#L180) and LDValue reading logic similar to https://github.com/launchdarkly/python-server-sdk-ai/blob/main/ldai/client.py#L134

Updates

• Implemented builder pattern for all classes in the datamodel directory
• Made all constructors package-private
• Updated LDAiClient to use the builder pattern
• Made fields final for immutability
• All tests are passing

Link to Devin run

https://app.devin.ai/sessions/f1057ea9206643789c93d45aa8c5c500

Requested by: lchan@launchdarkly.com

[louis-launchdarkly]

I just realized I also need to copy the .github file from another project in this mono-repo to have the test run in CI. I am running the test locally via ./gradlew build right now.

[kinyoklion]

Suggestions in comments.

[louis-launchdarkly]

I think the only optional change I may make in this PR is to use the builder pattern for the AiConfig. The changes from Devin and me addressed Ryan's feedback, added more comprehensive unit tests and is ready for review.

I will do the other methods (Actual AiConfig Feature Flag evaluation, LDAIConfigTracker) in separate PRs.

[tanderson-ld]

Add nullable and nonnull annotations on fields to help with consumption.

import javax.annotation.Nonnull;
import javax.annotation.Nullable;

[tanderson-ld]

Probably helpful to add field name.

More commits made.

[louis-launchdarkly]

Also, I realized using Ai is not to spec - in the future PR I will update everything to say AI instead.

[kinyoklion]

Also, I realized using Ai is not to spec - in the future PR I will update everything to say AI instead.

Generally speaking it would be using whatever is idiomatic to the language. Some languages have convenient standards. Like two letter initialisms are uppercase, but anything else follows the normal standard. So in C# AI and Html.

Java isn't as concrete, but we should be consistent.
It appears we use Id, so we probably should use Ai.

DiagnosticId
getId

Generally we call this out in the spec.
"adjusted to be language and SDK appropriate"