opensearchserverless: allow passing collectionName prop

[keremnalbant]

Describe the feature

Allow users passing the collectionName prop to OpenSearch Serverless Collection

Use Case

I'm always frustrated when I random generated service names.

Proposed Solution

create VectorCollectionProps interface and allow users to pass collectionName prop.

Other Information

No response

Acknowledgements

• [X] I may be able to implement this feature request
• [ ] This feature might incur a breaking change