feat: class import

[jbcaron]

Pull Request type

• Refactoring (no functional changes, no API changes)

What is the current behavior?

Resolves: #233

What is the new behavior?

• computation hash management: now based on Starknet version instead of block numbers
• database changes: removed the legacy JSON class from the database
• legacy class decompression: decompress the legacy class and create a blockifier class just-in-time for execution
• sierra class compilation: sierra class is now compiled using our custom type
• class fetch optimization: optimized class fetching through FGW

Does this introduce a breaking change?

Other information

[github-actions[bot]]

Coverage report

The coverage rate is 70.13647742873293%

57% of new lines are covered.

Diff Coverage details (click to unfold)

### crates/client/rpc/src/test_utils.rs `100.0%` of new lines are covered ### crates/primitives/transactions/src/compute_hash.rs `100.0%` of new lines are covered ### crates/primitives/class/src/class_hash.rs `91.42857142857143%` of new lines are covered ### crates/primitives/class/src/class_update.rs `0.0%` of new lines are covered ### crates/client/block_import/src/pre_validate.rs `84.61538461538461%` of new lines are covered ### crates/primitives/state_update/src/lib.rs `0.0%` of new lines are covered ### crates/client/rpc/src/versions/v0_7_1/methods/read/get_class_at.rs `100.0%` of new lines are covered ### crates/primitives/block/src/lib.rs `25.0%` of new lines are covered ### crates/client/rpc/src/providers/mempool.rs `0.0%` of new lines are covered ### crates/primitives/class/src/into_starknet_core.rs `100.0%` of new lines are covered ### crates/client/rpc/src/versions/v0_7_1/methods/trace/simulate_transactions.rs `0.0%` of new lines are covered ### crates/primitives/transactions/src/broadcasted_to_blockifier.rs `0.0%` of new lines are covered ### crates/client/rpc/src/utils/transaction.rs `0.0%` of new lines are covered ### crates/client/db/src/storage_updates.rs `100.0%` of new lines are covered ### crates/primitives/chain_config/src/chain_config.rs `100.0%` of new lines are covered ### crates/primitives/class/src/compile.rs `76.59574468085106%` of new lines are covered ### crates/client/sync/src/fetch/fetchers.rs `89.79591836734694%` of new lines are covered ### crates/client/rpc/src/versions/v0_7_1/methods/read/get_class.rs `100.0%` of new lines are covered ### crates/primitives/class/src/lib.rs `46.666666666666664%` of new lines are covered ### crates/client/rpc/src/versions/v0_7_1/methods/read/estimate_fee.rs `0.0%` of new lines are covered ### crates/primitives/chain_config/src/starknet_version.rs `56.0%` of new lines are covered ### crates/client/db/src/class_db.rs `70.73170731707317%` of new lines are covered ### crates/client/exec/src/blockifier_state_adapter.rs `0.0%` of new lines are covered ### crates/client/block_import/src/types.rs `100.0%` of new lines are covered ### crates/primitives/transactions/src/from_broadcasted_transaction.rs `0.0%` of new lines are covered ### crates/primitives/block/src/header.rs `100.0%` of new lines are covered