feat: add serializable session state for distributed deployments (#2111) #857

Job	Run time
checks / pre-commit	21s
checks / readme-snippets	14s
checks / test (3.10, locked, ubuntu-latest)	44s
checks / test (3.11, lowest-direct, ubuntu-latest)	44s
checks / test (3.12, locked, windows-latest)	3m 15s
checks / test (3.12, lowest-direct, windows-latest)	4m 4s
checks / test (3.11, locked, ubuntu-latest)	44s
checks / test (3.12, lowest-direct, ubuntu-latest)	52s
checks / test (3.12, locked, ubuntu-latest)	50s
checks / test (3.13, lowest-direct, ubuntu-latest)	49s
checks / test (3.10, lowest-direct, ubuntu-latest)	43s
checks / test (3.14, lowest-direct, windows-latest)	2m 19s
checks / test (3.10, lowest-direct, windows-latest)	2m 29s
checks / test (3.13, locked, ubuntu-latest)	41s
checks / test (3.14, locked, windows-latest)	2m 55s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 8s
checks / test (3.11, lowest-direct, windows-latest)	2m 32s
checks / test (3.10, locked, windows-latest)	2m 17s
checks / test (3.13, locked, windows-latest)	2m 21s
checks / test (3.13, lowest-direct, windows-latest)	2m 53s
checks / test (3.14, locked, ubuntu-latest)	2m 11s
checks / test (3.11, locked, windows-latest)	2m 34s
all-green	4s
	37m 44s

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