feat: SSQ

[jaybuidl]

Serialization scheme supporting simple binary fields of variable length.

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PR-Codex overview

Focus of this PR:

This PR introduces the SSQ library for serialization and deserialization of data. It also updates the KlerosCore contract to use the SSQ library for reducing L1 calldata costs on Optimistic Rollups.

Detailed summary:

• Added SSQ library for serialization and deserialization of data.
• Updated KlerosCore contract to use the SSQ library for reducing L1 calldata costs on Optimistic Rollups.
• Added new functions setStake and createDispute that use serialized arguments with SSQ library.

The following files were skipped due to too many changes: contracts/src/libraries/SSQ.sol, contracts/src/arbitration/dispute-kits/DisputeKitClassic.sol

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[jaybuidl]

SSQ compression could be made obsolete by Arbitrum Nitro, to check. https://offchain.medium.com/its-nitro-time-86944693bf29

[qlty-cloud-legacy[bot]]

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0 Bugs
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No Coverage information
0.0% Duplication

[shotaronowhere]

nitro will have native call data compressions, so SSQ seems like it won't be needed. It's still unclear how compressed calldata with be priced, see here.

Just clarifying this feature is low priority.

[jaybuidl]

Yes, let's see what the potential gains look like once Nitro is out of DevNet.

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