[Refactor] Refactor StmtExecutor

[morningman]

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Description

The current structure of the StmtExectuor class is very confusing. It contains too much logic, making it impossible to clearly view the execution process of a statement.

At the same time, it is tightly coupled with MysqlChannel and ConnectionContext, which causes a lot of irrelevant code to be mocked when other processes need to call this class.

So I plan to refactor this class to make its structure clearer and make it easier to add new logic later.

Solution

• Decoupling Profile and StmtExecutor ([Refactor](StmtExecutor)(step-1) Extract profile logic from StmtExecutor and Coordinator #19219)
• Decoupling MysqlChannel and StmtExecutor
• Decoupling InsertStmt and StmtExecutor
• Decoupling ConnectionContext and StmtExecutor

Are you willing to submit PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct