HPCC-10077 - Spray compressed does not set @compressedSize on file parts

Some modification to triage

Signed-off-by: Attila Vamos <attila.vamos@gmail.com>
HPCC-10077 - Spray compressed does not set @compressedSize on file parts

Some modification to triage and check the data flow.

Signed-off-by: Attila Vamos <attila.vamos@gmail.com>
HPCC-10077 - Spray compressed does not set @compressedSize on file parts

Extend ICompressedFileIO to provide compressed size value.

Add code to FtClient to send back compressed part size after it created
and renamed.

Add code to store compressed part size into partition metadata.

Signed-off-by: Attila Vamos <attila.vamos@gmail.com>