Add tx-granular ledger snapshot source using meta, RPC, and archives #438

Job	Run time
collect-examples	16s
test-example (increment_with_fuzz)	1m 35s
test-example (bls_signature)	1m 11s
test-example (custom_types)	1m 11s
test-example (cross_contract/contract_b)	1m 24s
test-example (cross_contract/contract_a)	1m 15s
test-example (increment)	1m 11s
test-example (mint-lock)	1m 14s
test-example (merkle_distribution)	2m 40s
test-example (fuzzing)	1m 37s
test-example (token)	2m 9s
test-example (single_offer)	2m 7s
test-example (increment_with_pause)	1m 22s
test-example (deployer/deployer)	1m 21s
test-example (other_custom_types)	2m 2s
test-example (import_ark_bn254)	1m 19s
test-example (deployer/contract)	2m 1s
test-example (deep_contract_auth)	1m 22s
test-example (upgradeable_contract/new_contract)	1m 10s
test-example (auth)	2m 0s
test-example (simple_account)	2m 14s
test-example (events)	1m 12s
test-example (atomic_swap)	2m 13s
test-example (atomic_multiswap)	1m 28s
test-example (logging)	2m 1s
test-example (alloc)	2m 5s
test-example (errors)	2m 7s
test-example (ttl)	2m 4s
test-example (timelock)	2m 8s
test-example (privacy-pools/contract)	1m 51s
test-example (privacy-pools)	1m 39s
test-example (liquidity_pool)	1m 5s
test-example (pause)	2m 30s
test-example (multisig_1_of_n_account/contract)	1m 10s
test-example (groth16_verifier)	2m 17s
test-example (hello_world)	1m 16s
test-example (eth_abi)	3m 5s
test-example (upgradeable_contract/old_contract)	1m 22s
test-example (account)	1m 10s
	1h 5m 24s

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