Build

Add hooks for calling arbitrary code around each benchmark #299

Job	Run time
tox-jobs (doc)	22s
ubuntu-latest - 3.12	39s
tox-jobs (pep8)	22s
macos-latest - 3.12	30s
windows-latest - 3.12	1m 13s
ubuntu-latest - pypy3.10	1m 24s
ubuntu-latest - pypy3.9	1m 18s
ubuntu-latest - pypy3.8	1m 21s
ubuntu-latest - 3.8	36s
ubuntu-latest - 3.9	35s
ubuntu-latest - 3.10	49s
ubuntu-latest - 3.11	33s
ubuntu-latest - 3.13-dev free-threading	1m 15s
	10m 57s

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