Update bn254 typenames and add mapping #390

Job	Run time
collect-examples	18s
test-example (increment_with_pause)	2m 10s
test-example (increment_with_fuzz)	2m 38s
test-example (mint-lock)	1m 58s
test-example (cross_contract/contract_b)	2m 14s
test-example (cross_contract/contract_a)	1m 52s
test-example (deployer/deployer)	2m 7s
test-example (events)	2m 3s
test-example (bls_signature)	2m 13s
test-example (custom_types)	2m 7s
test-example (pause)	1m 53s
test-example (deployer/contract)	1m 56s
test-example (multisig_1_of_n_account/contract)	1m 58s
test-example (increment)	1m 52s
test-example (fuzzing)	2m 44s
test-example (timelock)	2m 2s
test-example (simple_account)	2m 0s
test-example (import_ark_bn254)	2m 18s
test-example (token)	2m 4s
test-example (privacy-pools/contract)	2m 36s
test-example (hello_world)	2m 1s
test-example (logging)	2m 5s
test-example (alloc)	2m 9s
test-example (single_offer)	2m 5s
test-example (ttl)	2m 2s
test-example (errors)	2m 9s
test-example (privacy-pools)	2m 25s
test-example (atomic_multiswap)	2m 9s
test-example (eth_abi)	2m 2s
test-example (upgradeable_contract/old_contract)	2m 7s
test-example (auth)	2m 2s
test-example (other_custom_types)	2m 3s
test-example (merkle_distribution)	2m 7s
test-example (liquidity_pool)	1m 59s
test-example (deep_contract_auth)	1m 54s
test-example (groth16_verifier)	1m 54s
test-example (account)	1m 58s
test-example (upgradeable_contract/new_contract)	2m 0s
test-example (atomic_swap)	2m 7s
	1h 20m 21s

Provide feedback