feat: add serializable session state for distributed deployments (#2111) #859

Job	Run time
checks / readme-snippets	13s
checks / pre-commit	33s
checks / test (3.10, locked, windows-latest)	2m 13s
checks / test (3.11, lowest-direct, ubuntu-latest)	52s
checks / test (3.11, lowest-direct, windows-latest)	2m 37s
checks / test (3.10, locked, ubuntu-latest)	46s
checks / test (3.10, lowest-direct, ubuntu-latest)	54s
checks / test (3.10, lowest-direct, windows-latest)	2m 58s
checks / test (3.12, lowest-direct, windows-latest)	3m 20s
checks / test (3.11, locked, ubuntu-latest)	50s
checks / test (3.12, locked, ubuntu-latest)	51s
checks / test (3.11, locked, windows-latest)	2m 21s
checks / test (3.12, lowest-direct, ubuntu-latest)	56s
checks / test (3.12, locked, windows-latest)	3m 5s
checks / test (3.13, locked, windows-latest)	2m 27s
checks / test (3.13, locked, ubuntu-latest)	46s
checks / test (3.13, lowest-direct, ubuntu-latest)	52s
checks / test (3.13, lowest-direct, windows-latest)	2m 33s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 19s
checks / test (3.14, locked, ubuntu-latest)	2m 18s
checks / test (3.14, lowest-direct, windows-latest)	2m 22s
checks / test (3.14, locked, windows-latest)	3m 6s
all-green	2s
	38m 14s

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