feat: Impl V2 Delegate

[snawaz]

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Status	Type	⚠️ Core Change	Issue
Ready/Hold	Feature/Bug/Tooling/Refactor/Hotfix	Yes/No	Link

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[snawaz]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• feat: Impl V2 Commit #142
• feat: Impl V2 CommitFinalize #141
• feat: Impl V2 Delegate #140 👈 (View in Graphite)
• chore: add rustfmt.toml with some sensible format settings #139
• chore: upgrade pinocchio #138
• feat: add CommitFinalizeFromBuffer #137
• feat: add CommitFinalize #131
• feat: add AccountSizeClass and compute account-data sizes for 8 instructions #130
• main

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