Replace proof_of_sql_parser::intermediate_ast::BinaryOp with sqlparser::ast::BinaryOp in the proof-of-sql crate

[iajoiner]

Background and Motivation

This issue is a subtask in #235. In short since we plan to add more SQL features we plan to switch to the sqlparser crate which is a feature-rich, no_std-compatible parser used by DataFusion, which is part of the Arrow ecosystem.

Right now we already have some code that can convert intermediate AST from proof-of-sql-parser we use to sqlparser AST. Now we need to systematically replace instances of proof-of-sql-parser constructs with their corresponding sqlparser ones.

Changes Required

• Replace proof_of_sql_parser::intermediate_ast::BinaryOp with sqlparser::ast::BinaryOp in the proof-of-sql crate.
• Make sure no functionality is lost.
• If necessary add error enum variants for unary ops in sqlparser that we don't support yet.

[github-actions]

🎉 This issue has been resolved in version 0.47.0 🎉

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