[DO NOT MERGE] chore: release of enhanced library

[telpirion]

This release adds the enhanced client library and related tests for Node.js:

• helpers.ts: converts protobuf.Value structs to/from plain JS objects. Note: may require refactoring when this protobuf.js PR is merged.
• index.ts: assigns toValue() and fromValue() methods to enhanced types.
• enhanced-types.json: config / manifest with list of enhanced types in this library
• enhanced types:
  • trainingjob.definition.*
  • predict.instance.*
  • predict.params
  • predict.prediction

[snippet-bot]

Here is the summary of changes.

You added 19 region tags.

• aiplatform_create_batch_prediction_job_video_classification in samples/create-batch-prediction-job-video-classification.js
• aiplatform_create_batch_prediction_job_video_object_tracking in samples/create-batch-prediction-job-video-object-tracking.js
• aiplatform_create_training_pipeline_image_classification in samples/create-training-pipeline-image-classification.js
• aiplatform_create_training_pipeline_image_object_detection in samples/create-training-pipeline-image-object-detection.js
• aiplatform_create_training_pipeline_tables_classification in samples/create-training-pipeline-tabular-classification.js
• aiplatform_create_training_pipeline_tables_regression in samples/create-training-pipeline-tabular-regression.js
• aiplatform_create_training_pipeline_text_classification in samples/create-training-pipeline-text-classification.js
• aiplatform_create_training_pipeline_text_entity_extraction in samples/create-training-pipeline-text-entity-extraction.js
• aiplatform_create_training_pipeline_text_sentiment_analysis in samples/create-training-pipeline-text-sentiment-analysis.js
• aiplatform_create_training_pipeline_video_classification in samples/create-training-pipeline-video-classification.js
• aiplatform_create_training_pipeline_video_object_tracking in samples/create-training-pipeline-video-object-tracking.js
• aiplatform_list_endpoints in samples/list-endpoints.js
• aiplatform_predict_image_classification in samples/predict-image-classification.js
• aiplatform_predict_image_object_detection in samples/predict-image-object-detection.js
• aiplatform_predict_tabular_classification_sample in samples/predict-tabular-classification.js
• aiplatform_predict_tabular_regression_sample in samples/predict-tabular-regression.js
• aiplatform_predict_text_classification in samples/predict-text-classification.js
• aiplatform_predict_text_entity_extraction in samples/predict-text-entity-extraction.js
• aiplatform_predict_text_entity_extraction in samples/predict-text-sentiment-analysis.js

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[telpirion]

Closing this PR so that I can rebase off of encl-synth