feat(server): lifespan redesign with server-scoped and session-scoped lifetimes #863

Job	Run time
checks / readme-snippets	10s
checks / pre-commit	23s
checks / test (3.10, lowest-direct, ubuntu-latest)	5m 18s
checks / test (3.10, locked, ubuntu-latest)	4m 56s
checks / test (3.10, lowest-direct, windows-latest)	5m 15s
checks / test (3.12, lowest-direct, windows-latest)	5m 49s
checks / test (3.11, lowest-direct, ubuntu-latest)	4m 2s
checks / test (3.12, lowest-direct, ubuntu-latest)	4m 40s
checks / test (3.10, locked, windows-latest)	5m 4s
checks / test (3.11, locked, ubuntu-latest)	3m 56s
checks / test (3.11, locked, windows-latest)	5m 23s
checks / test (3.12, locked, windows-latest)	5m 41s
checks / test (3.12, locked, ubuntu-latest)	5m 22s
checks / test (3.13, locked, ubuntu-latest)	3m 54s
checks / test (3.13, lowest-direct, windows-latest)	5m 35s
checks / test (3.14, lowest-direct, windows-latest)	5m 20s
checks / test (3.13, locked, windows-latest)	5m 8s
checks / test (3.14, locked, windows-latest)	6m 13s
checks / test (3.13, lowest-direct, ubuntu-latest)	5m 12s
checks / test (3.11, lowest-direct, windows-latest)	5m 19s
checks / test (3.14, locked, ubuntu-latest)	5m 59s
checks / test (3.14, lowest-direct, ubuntu-latest)	5m 23s
all-green	5s
	1h 44m 7s

Provide feedback