Publish versioning, roadmap, and dependency policies for v2 #3776

Job	Run time
checks / readme-snippets	16s
checks / docs	52s
checks / pre-commit	56s
checks / test (3.13, locked, windows-latest)	2m 2s
checks / test (3.13, lowest-direct, ubuntu-latest)	1m 16s
checks / test (3.11, lowest-direct, ubuntu-latest)	1m 21s
checks / test (3.11, locked, ubuntu-latest)	1m 27s
checks / test (3.14, lowest-direct, windows-latest)	1m 50s
checks / test (3.12, lowest-direct, ubuntu-latest)	1m 32s
checks / test (3.12, lowest-direct, windows-latest)	2m 1s
checks / test (3.11, locked, windows-latest)	2m 13s
checks / test (3.11, lowest-direct, windows-latest)	1m 54s
checks / test (3.10, lowest-direct, windows-latest)	1m 52s
checks / test (3.13, lowest-direct, windows-latest)	1m 52s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 22s
checks / test (3.13, locked, ubuntu-latest)	1m 21s
checks / test (3.14, locked, ubuntu-latest)	1m 25s
checks / test (3.10, locked, ubuntu-latest)	1m 14s
checks / test (3.10, lowest-direct, ubuntu-latest)	1m 30s
checks / test (3.12, locked, ubuntu-latest)	1m 39s
checks / test (3.12, locked, windows-latest)	2m 2s
checks / test (3.14, locked, windows-latest)	2m 1s
checks / test (3.10, locked, windows-latest)	1m 55s
all-green	2s
	35m 55s

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