Vukasin Stefanovic

possible performance issue: mbedtls_gcm_update CPU utilization

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I've written a simple example to test the performance of MbedTLS. It's unoptimized and probably incorrect in some aspects, but I hope it shows the issue that I'm facing when...

## Which issue does this PR close? https://github.com/apache/iceberg-rust/issues/1765 - Closes #. ## What changes are included in this PR? ## Are these changes tested?

Support (incremental) changelog scan for Change Data Capture use-cases

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### Is your feature request related to a problem or challenge? Currently iceberg-rust doesn't provide a way to see changes between two snapshots. In Spark, through Iceberg Java implementation, this...

Support for `_pos` metadata column

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### Is your feature request related to a problem or challenge? The [spec ](https://iceberg.apache.org/spec/#reserved-field-ids) defines metadata columns, one of which is the `_pos` column. This column seems instrumental for write...

### Is your feature request related to a problem or challenge? The [spec ](https://iceberg.apache.org/spec/#reserved-field-ids)defines metadata columns, one of which is the `_file` column. This column seems instrumental for write operations...

Implements support for Arrow's RunEndEncoded (REE) layout as specified in the Arrow format specification. REE is a run-length encoding variant that efficiently stores arrays with repeated values using two child...