Add onchain errors dictionary

[fbac]

• Add all the current protocol errors and a way of translating the code.
• Some files are renamed to force golang style snake case.

[graphite-app]

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[macroscopeapp]

Add onchain errors dictionary and change blockchain.ExecuteTransaction to return ProtocolError with decoded revert reasons, enabling blockchain.RatesAdmin.AddRates to detect no-op updates

• Introduce ProtocolError and BlockchainError types with IsNoChange() and formatted rendering in errors.go.
• Wrap transaction execution failures using NewBlockchainError and return ProtocolError from blockchain.ExecuteTransaction in client.go.
• Add a selector-to-signature map for protocol revert reasons and extraction via regex in errors.go.
• Use IsNoChange() in blockchain.RatesAdmin.AddRates and adjust logging in rates_admin.go.
• Add package comments and minor doc punctuation in interface.go.
• Rename files to snake_case without content changes, e.g., blockchain_publisher.go, registry_admin.go, reports_manager.go.

📍Where to Start

Start with blockchain.ExecuteTransaction in client.go, then review NewBlockchainError and ProtocolError in errors.go, and finally see usage in blockchain.RatesAdmin.AddRates in rates_admin.go.

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Macroscope summarized ed97c2e.