Add a benchmark for constructing classes with cached properties #1828

Job	Run time
Verify dev env	12s
Check types using supported type checkers	21s
Build & verify package	18s
Run doctests & render changelog	19s
Tests on pypy-3.10	22s
Tests & Mypy on 3.11	55s
Tests & Mypy on 3.12	57s
Tests & Mypy on 3.9	31s
Tests & Mypy on 3.13	59s
Tests & Mypy on 3.10	1m 5s
Tests & Mypy on 3.14	1m 7s
Combine & check coverage	10s
required-checks-pass	3s
	7m 19s

Provide feedback