feat: expose timings in verbose state of OOC sort

[ritchie46]

OOC sort started
Temporary directory path in use: temp
run UdfExec
RUN STREAMING PIPELINE
parquet -> sort -> parquet_sink
RefCell { value: [] }
STREAMING CHUNK SIZE: 2941 rows
finished sinking into OOC sort in 3.982244806s
full file dump of OOC sort took 5.155624213s
processing 245 files
partitioning sort took: 5.063799475s
spilling all partitioned files took: 7.694338058s
started sort source phase
sort source phase took: 3.780204067s
full ooc sort took: 16.632243722s

Shows we are twiddling thumbs waiting for all files to be spilled. We probably can do something useful in that time.