HPCC-10200 Decompress graphs in wuget output

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
Merge pull request #5369 from richardkchapman/wuget-decompress

HPCC-10200 Decompress graphs in wuget output

Reviewed-by: Gavin Halliday <ghalliday@hpccsystems.com>