Add various utility meta-transforms to Beam. #29952

Job	Run time
Build python source distribution	1m 10s
Check environment variables	15s
Build python cp38- wheels on auto for ubuntu-20.04	28m 0s
Prepare GCS	0s
Build python cp39- wheels on auto for ubuntu-20.04	20m 14s
Build python cp310- wheels on auto for ubuntu-20.04	16m 19s
Build python cp311- wheels on auto for ubuntu-20.04	21m 40s
Build python cp312- wheels on auto for ubuntu-20.04	16m 11s
Build python cp38- wheels on auto for macos-13	21s
Build python cp39- wheels on auto for macos-13	18s
Build python cp310- wheels on auto for macos-13	24s
Build python cp311- wheels on auto for macos-13	22s
Build python cp312- wheels on auto for macos-13	3m 38s
Build python cp38- wheels on auto for windows-latest	18s
Upload python source distribution to GCS bucket	0s
Build python cp39- wheels on auto for windows-latest	25s
Build python cp310- wheels on auto for windows-latest	22s
Build python cp311- wheels on auto for windows-latest	21s
Build python cp312- wheels on auto for windows-latest	5m 22s
Build python cp38- wheels on aarch64 for ubuntu-20.04	53s
Build python cp39- wheels on aarch64 for ubuntu-20.04	1m 15s
Build python cp310- wheels on aarch64 for ubuntu-20.04	57s
Build python cp311- wheels on aarch64 for ubuntu-20.04	54s
Build python cp312- wheels on aarch64 for ubuntu-20.04	57m 46s
Branch repo nightly	0s
Upload wheels to GCS bucket	0s
List files on Google Cloud Storage Bucket	0s
	2h 57m 25s

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