Add infrastructure for supporting multiple token slots per unlock method #3146

Job	Run time
checks (make -f Makefile clippy, 1.84.0, clippy)	2m 13s
checks_with_tang_should_fail (TANG_URL=localhost make -f Makefile test-clevis-loop-should-fail, 1...	3m 30s
checks (PROFILEDIR=debug make -f Makefile build, 1.84.0, cargo)	1m 31s
checks_with_udev (RUST_LOG=stratisd=debug make -f Makefile test-loop, 1.84.0, cargo)	9m 39s
checks (PROFILEDIR=debug make -f Makefile build-test-extras, 1.84.0, cargo)	1m 15s
checks (PROFILEDIR=debug make -f Makefile build-min, 1.84.0, cargo)	1m 25s
checks (PROFILEDIR=debug make -f Makefile build-min-no-systemd, 1.84.0, cargo)	1m 50s
checks (PROFILEDIR=debug make -f Makefile build-utils, 1.84.0, cargo)	1m 50s
checks (PROFILEDIR=debug make -f Makefile build-no-ipc, 1.84.0, cargo)	1m 25s
checks (PROFILEDIR=debug make -f Makefile stratisd-tools, 1.84.0, cargo)	1m 22s
checks (make -f Makefile docs-ci, 1.84.0, cargo)	1m 7s
checks (make -f Makefile test, 1.84.0, cargo)	2m 8s
checks (make -f Makefile build, 1.84.0, cargo)	1m 59s
checks (make -f Makefile build-test-extras, 1.84.0, cargo)	1m 46s
checks (make -f Makefile build-min, 1.84.0, cargo)	1m 47s
checks (make -f Makefile build-no-ipc, 1.84.0, cargo)	1m 51s
	36m 38s

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