[WIP] feat: Add TPC-H generator CLI

[ZacBlanco]

This tool is useful for generating TPC-H data to run some of the benchmarks included with bolt

What problem does this PR solve?

There is a TPC-H benchmark tool, but it requires an existing TPC-H dataset. The codebase doesn't seem to provide an easy way to generate a TPC-H dataset.

Type of Change

• 🐛 Bug fix (non-breaking change which fixes an issue)
• ✨ New feature (non-breaking change which adds functionality)
• 🚀 Performance improvement (optimization)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)
• 🔨 Refactoring (no logic changes)
• 🔧 Build/CI or Infrastructure changes
• 📝 Documentation only

Description

Add a new executable which generates a set of TPC-H tables at a given scale factor. It re-uses existing TPC-H generation infrastrucutre, but just exposes it as an easy to use CLI interface so users can generate data. Then a benchmark executable like bolt_tpch_benchmark can be used and pointed to the data directory without having to generate the data another way.

Performance Impact

• No Impact: This change does not affect the critical path (e.g., build system, doc, error handling).
• Positive Impact: I have run benchmarks.
• Negative Impact: Explained below (e.g., trade-off for correctness).

Release Note

Release Note:

Release Note:
- Add a user-friendly CLI tool to generate TPC-H data for benchmarks

Checklist (For Author)

• I have added/updated unit tests (ctest).
• I have verified the code with local build (Release/Debug).
• I have run clang-format / linters.
• (Optional) I have run Sanitizers (ASAN/TSAN) locally for complex C++ changes.
• No need to test or manual test.

Breaking Changes

• No
• Yes (Description: ...)