add TaggedExpression #3293

Job	Run time
Typos	5s
Pylint	3s
Mypy	1m 22s
Documentation	1m 28s
Conda Pytest (ubuntu-latest)	3s
Conda Pytest with Intel CL	3m 51s
Conda Pytest without arg check	9s
Conda Pytest (macos-latest)	6s
Conda Pytest Twice (for cache behavior)	5m 21s
Ruff	8s
Tests for downstream project Firedrake	18m 53s
Tests for downstream project arraycontext	6s
Conda Examples	1m 50s
Tests for downstream project meshmode	6s
Tests for downstream project grudge	5s
Validate CITATION.cff	6s
Tests for downstream project pytential	5s
Tests for downstream project pytato	6s
	33m 53s

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