[APP] Google Vizier

**Name of app / service**
Google Vizier

**Link to developer documentation**
https://cloud.google.com/vertex-ai/docs/vizier/overview

**Is lack of support preventing you from building workflows, or do you have a workaround?**

**Are there specific actions, or triggers, you'd like to see for this app? Please let us know here or use the Action and Trigger issue templates to open requests for each!**

From Vizier Team:

While we don't have a use case for Pipedream inside Google Vizier, we could work with you to get Vizier integrated into Pipedream.

Vizier is a [black box optimization service](https://oss-vizier.readthedocs.io/en/latest/index.html), which can be used to optimize anything where:
- Optimization is expensive, so only a small number of evaluations are possible (up to 10s-100s of thousands, but typically less than 1000)
- No gradients can be measured
- The user can define one, or more, metrics to be optimized
- The user can evaluate each suggestion made by Vizier and report back metric value(s)

Some Vizier use case examples are tuning ML model hyperparameters, optimizing knobs in a system, or finding a better chocolate chip cookie recipe.

Vizier is available on Github (as a service users can run themselves), and on Google Cloud (as [Vertex Vizier](https://cloud.google.com/vertex-ai/docs/vizier/overview)).
Both Vizier versions share a very similar API, so [one integration will work with both](https://github.com/GoogleCloudPlatform/vertex-ai-samples/blob/main/notebooks/community/vizier/conversions_vertex_vizier_and_open_source_vizier.ipynb).