feat: add serializable session state for distributed deployments (#2111) #858

Job	Run time
checks / pre-commit	40s
checks / readme-snippets	13s
checks / test (3.10, lowest-direct, ubuntu-latest)	45s
checks / test (3.11, locked, windows-latest)	2m 43s
checks / test (3.10, lowest-direct, windows-latest)	2m 20s
checks / test (3.11, lowest-direct, windows-latest)	2m 31s
checks / test (3.11, lowest-direct, ubuntu-latest)	45s
checks / test (3.13, locked, ubuntu-latest)	42s
checks / test (3.12, lowest-direct, ubuntu-latest)	49s
checks / test (3.11, locked, ubuntu-latest)	43s
checks / test (3.12, lowest-direct, windows-latest)	4m 2s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 7s
checks / test (3.10, locked, windows-latest)	2m 14s
checks / test (3.10, locked, ubuntu-latest)	44s
checks / test (3.14, lowest-direct, windows-latest)	2m 10s
checks / test (3.13, locked, windows-latest)	2m 16s
checks / test (3.12, locked, ubuntu-latest)	50s
checks / test (3.12, locked, windows-latest)	3m 44s
checks / test (3.14, locked, ubuntu-latest)	2m 13s
checks / test (3.13, lowest-direct, ubuntu-latest)	45s
checks / test (3.13, lowest-direct, windows-latest)	2m 35s
checks / test (3.14, locked, windows-latest)	3m 7s
all-green	5s
	38m 3s

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