feat: add remote vertex model support

[GarrettWu]

b/299356085

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[ashleyxuu]

You should also update docs/template/toc.yml file and docs/reference/bigframe.ml file to auto-sync the docs changes.

[ashleyxuu]

Could you give an example of the endpoints? For example, I saw "https://us-central1-aiplatform.googleapis.com/v1/projects/1084210331973/locations/us-central1/endpoints/3193318217619603456" in your test. Might be give users some hints how to find the endpoints?

[GarrettWu]

User needs to deploy the model by themselves then they can find the endpoint, as well as the input/output schema. Such as https://screenshot.googleplex.com/49NX9PYEbBFNeMH

[ashleyxuu]

Could you also add the log_adapter annotation to the new Class?

[GarrettWu]

You should also update docs/template/toc.yml file and docs/reference/bigframe.ml file to auto-sync the docs changes.

Done.

[GarrettWu]

Could you also add the log_adapter annotation to the new Class?

done

[ashleyxuu]

nit: It's better to put this in alphabetic order.