Add S3 Engine and Table Function

Why it matters

This feature allows users to query and interact with data stored in Amazon S3 as if it were a native ClickHouse table, simplifying integration and analysis of external cloud data. Although authentication support is not yet implemented, it lays the groundwork for seamless external storage access.

How to use it

Users can create tables using the S3 engine or call the S3 table function within SQL statements to read data directly from S3. Since authentication is not yet supported, access is currently limited to publicly accessible buckets or buckets configured with appropriate access permissions.