New version: MLFlowClient v0.8.0

[JuliaRegistrator]

• Registering package: MLFlowClient
• Repository: https://github.com/JuliaAI/MLFlowClient.jl
• Created by: @pebeto
• Version: v0.8.0
• Commit: 1bd31f531f34f9caef55d145e1750439548e2661
• Reviewed by: @pebeto
• Reference: Issue to trigger new releases JuliaAI/MLFlowClient.jl#39 (comment)
• Description: Julia client for MLFlow.
• Release notes:

### New features
- MLFlow 3.0 API Endpoints
    - Scorers API
    - Gateway API (Databricks-specific)
        - Secrets management
        - Model definitions
        - Endpoints
        - Endpoint bindings
        - Budgets
    - Prompt optimization API
    - **MLFlow Artifacts API**

### Modifications (breaking changes)
- `logmetric`
    - Added parameters: `model_id`, `dataset_name, `dataset_digest`

### Notes
- Gateway API
    - Gateway endpoints are Databricks-specific features
    - Tests will automatically skip if not using a Databricks tracking URI
    - Warning message displayed when attempting to run gateway tests on non-Databricks servers
- Prompt optimization API
    - Requires evaluation datasets to be present on the server
    - Tests gracefully skip with warnings if required resources are not available
- MLFlow Artifacts API
    - Uses `mlflow-artifacts` prefix (separate from main MLFlow API)
    - Multipart upload support for large files

[github-actions]

Hello, I am an automated registration bot. I help manage the registration process by checking your registration against a set of AutoMerge guidelines. If all these guidelines are met, this pull request will be merged automatically, completing your registration. It is strongly recommended to follow the guidelines, since otherwise the pull request needs to be manually reviewed and merged by a human.

1. AutoMerge Guidelines are all met! ✅

Your new version registration met all of the guidelines for auto-merging and is scheduled to be merged in the next round (~20 minutes).

2. To pause or stop registration

If you want to prevent this pull request from being auto-merged, simply leave a comment. If you want to post a comment without blocking auto-merging, you must include the text [noblock] in your comment.

Tip: You can edit blocking comments to add [noblock] in order to unblock auto-merging.