add TaggedExpression #3514

Job	Run time
Pylint	1m 41s
Mypy	1m 31s
Typos	3s
Ruff	5s
Documentation	1m 40s
Tests for downstream project Firedrake	2m 31s
Tests for downstream project arraycontext	2m 24s
Conda Examples	1m 51s
Tests for downstream project meshmode	9m 40s
Tests for downstream project grudge	10m 25s
Conda Pytest (ubuntu-latest)	4m 3s
Conda Pytest with Intel CL	3m 28s
Conda Pytest without arg check	3m 53s
Tests for downstream project pytential	40m 44s
Conda Pytest (macos-latest)	4m 36s
Tests for downstream project pytato	6m 5s
Conda Pytest Twice (for cache behavior)	5m 8s
Validate CITATION.cff	7s
	1h 39m 55s

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