Add `vault_pki` modules #135

Job	Run time
CI / Get Changed Files / Get Changed Files	7s
CI / Changed Files Debug Output	1s
CI / Pre-Commit / Pre-Commit	2m 10s
CI / Python Package	0s
CI / Docs / Docs	1m 19s
CI / Test / Windows (3.8, 3005.4)	2m 44s
CI / Test / Linux (3.8, 3005.4)	1m 34s
CI / Test / Windows (3.8, 3006.4)	2m 6s
CI / Test / Linux (3.8, 3006.4)	1m 38s
CI / Test / macOS (3.9, 3005.4)	1m 48s
CI / Test / Linux (3.9, 3005.4)	1m 32s
CI / Test / macOS (3.10, 3006.4)	1m 40s
CI / Test / Linux (3.9, 3006.4)	1m 37s
CI / Test / Linux (3.10, 3006.4)	1m 32s
CI / Deploy Python Package (Test PyPI)	0s
CI / Deploy Python Package (PyPI)	0s
CI / Set the CI Pipeline Exit Status	6s
	19m 54s

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