feat(risedev): add sqlsmith-reducer risedev command

[kwannoel]

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What's changed and what's your intention?

After this PR, you can use:

./risedev sr <sql script file>

To reduce your failing SQL query.

Checklist

• I have written necessary rustdoc comments.
• I have added necessary unit tests and integration tests.
• I have added test labels as necessary.
• I have added fuzzing tests or opened an issue to track them.
• My PR contains breaking changes.
• My PR changes performance-critical code, so I will run (micro) benchmarks and present the results.
• I have checked the Release Timeline and Currently Supported Versions to determine which release branches I need to cherry-pick this PR into.

Documentation

• My PR needs documentation updates.

Release note

[Copilot]

Pull Request Overview

This PR adds Makefile.toml tasks for building and running the sqlsmith-reducer tool, which reduces failing SQL queries to minimal reproducible cases while preserving errors. It also adds the .sqlsmith/ directory to .gitignore to exclude generated reducer output.

• Adds three new tasks: build-sqlsmith-reducer, sql-reduce-short (alias sr), and sql-reduce-full for building and running the SQL query reducer
• Adds .sqlsmith/ directory to .gitignore for temporary reducer output files

Reviewed Changes

Copilot reviewed 1 out of 2 changed files in this pull request and generated 4 comments.

File	Description
Makefile.toml	Adds task definitions for building sqlsmith-reducer and running SQL reduction operations
.gitignore	Excludes the .sqlsmith/ directory used for temporary reducer output

[kwannoel]

• feat(risedev): add sqlsmith-reducer risedev command #23598 👈 (View in Graphite)
• main

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[kwannoel]

@copilot please address the unresolved review comments in this PR.

[Copilot]

@kwannoel I've opened a new pull request, #23606, to work on those changes. Once the pull request is ready, I'll request review from you.

[Copilot]

Pull Request Overview

Copilot reviewed 1 out of 2 changed files in this pull request and generated no new comments.