HPCC-29657 Produce aggregate stats (e.g. spill, cost) whilst a job is running #6295

Job	Run time
Check Skip	26s
Build Docker (ubuntu-23.04, pull_request)	1h 1m 28s
Build Docker (ubuntu-22.04, k8s, true, schedule)	14s
Build Bare Metal (ubuntu-20.04, mono, sudo, -DCMAKE_BUILD_TYPE=RelWithDebInfo -DINCLUDE_PLUGINS=O...	5s
Build Docker (ubuntu-22.04, schedule)	1m 13s
Build Bare Metal (ubuntu-22.04, mono, sudo, -DCMAKE_BUILD_TYPE=RelWithDebInfo -DINCLUDE_PLUGINS=O...	1h 10m 41s
Build Docker (ubuntu-20.04, schedule)	1m 3s
Build Bare Metal (windows-2019, -T host=x64 -A x64 -DUSE_OPTIONAL=OFF -DCLIENTTOOLS_ONLY=ON -DUSE...	4s
Build Docker (centos-8, schedule)	26s
Build Bare Metal (windows-2022, -T host=x64 -A x64 -DUSE_OPTIONAL=OFF -DCLIENTTOOLS_ONLY=ON -DUSE...	29m 27s
Build Docker (centos-7, pull_request, -DVCPKG_TARGET_TRIPLET=x64-centos-7-dynamic)	1h 17m 52s
Build Bare Metal (macos-11, mono, sudo, -DCMAKE_BUILD_TYPE=Release -DUSE_OPTIONAL=OFF -DCLIENTTOO...	5s
Build Docker (amazonlinux, schedule, -DVCPKG_TARGET_TRIPLET=x64-amazonlinux-dynamic)	59s
Build Bare Metal (macos-12, mono, sudo, -DCMAKE_BUILD_TYPE=Release -DUSE_OPTIONAL=OFF -DCLIENTTOO...	19m 53s
Build Docker (centos-7, LN, -DVCPKG_TARGET_TRIPLET=x64-centos-7-dynamic, true, schedule)	1m 16s
	4h 25m 12s

Provide feedback