Feat/support event db mgr

[imotai]

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PR-Codex overview

This PR focuses on adding the ability to delete event databases and query collections in the database from the index.

Detailed summary

• Updated package.json to increment the version to 0.4.1.
• Added deleteEventDatabase function to delete event databases.
• Added GetCollectionOfDatabaseRequest and GetCollectionOfDatabaseResponse messages to query collections in the database from the index.
• Implemented getCollectionOfDatabase RPC method in the IndexerNodeImpl struct.

The following files were skipped due to too many changes: src/node/src/indexer_impl.rs, src/storage/src/db_store_v2.rs

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