Add benchmark representing FastAPI startup time #9642

Job	Run time
docs-build	1m 28s
test ubuntu / 3.7	2m 12s
test ubuntu / 3.8	2m 15s
test ubuntu / 3.9	2m 0s
test ubuntu / 3.10	2m 17s
test ubuntu / 3.11	2m 9s
test macos / 3.7	3m 40s
test macos / 3.8	3m 29s
test macos / 3.9	3m 17s
test macos / 3.10	3m 23s
test macos / 3.11	3m 27s
test windows / 3.7	3m 39s
test windows / 3.8	3m 28s
test windows / 3.9	2m 49s
test windows / 3.10	4m 8s
test windows / 3.11	3m 56s
test ubuntu / pypy3.7	8m 11s
test ubuntu / pypy3.8	10m 48s
test ubuntu / pypy3.9	9m 3s
test memray	6m 44s
lint 3.7	1m 22s
lint 3.8	1m 15s
lint 3.9	1m 25s
lint 3.10	1m 11s
lint 3.11	1m 23s
test fastapi	1m 55s
mypy 1.0.1 / 3.10	5m 58s
mypy lockfile / 3.10	4m 21s
mypy 1.2.0 / 3.10	5m 21s
mypy 1.4.1 / 3.10	3m 11s
mypy lockfile / 3.7	3m 24s
mypy lockfile / 3.8	3m 52s
mypy lockfile / 3.9	4m 47s
mypy lockfile / 3.11	3m 5s
test typing-extensions 4.6.1 on Python 3.8	2m 17s
test typing-extensions 4.6.1 on Python 3.9	2m 36s
test typing-extensions 4.6.1 on Python 3.10	2m 26s
test typing-extensions 4.6.1 on Python 3.11	3m 41s
test typing-extensions main on Python 3.8	2m 15s
test typing-extensions main on Python 3.9	2m 29s
test typing-extensions main on Python 3.10	3m 21s
test typing-extensions main on Python 3.11	2m 49s
test typing-extensions 4.6.1 on Python 3.7	1m 28s
coverage-combine	39s
check	2s
release	0s
Send tweet	0s
	2h 28m 56s

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