Add a runnable vector search example for the .NET SDK (create table, insert vectors with byte encoding, add vector index, search by vector).
Referenced from YDB documentation: https://github.com/ydb-platform/ydb/blob/main/ydb/docs/en/core/recipes/ydb-sdk/vector-search.md
Add a runnable vector search example for the .NET SDK (create table, insert vectors with byte encoding, add vector index, search by vector).
Referenced from YDB documentation: https://github.com/ydb-platform/ydb/blob/main/ydb/docs/en/core/recipes/ydb-sdk/vector-search.md