chore(optimizer): add tpcds unit test for optimizer

[BohuTANG]

I hereby agree to the terms of the CLA available at: https://docs.databend.com/dev/policies/cla/

Summary

Now, we can modify the table&column statistics and verify the TPC-DS optimized plan is expected or not, easy to DEBUG.

• part of Improve: add more tests for optimizer #17551

Tests

• Unit Test
• Logic Test
• Benchmark Test
• No Test - Explain why

Type of change

• Bug Fix (non-breaking change which fixes an issue)
• New Feature (non-breaking change which adds functionality)
• Breaking Change (fix or feature that could cause existing functionality not to work as expected)
• Documentation Update
• Refactoring
• Performance Improvement
• Other (please describe):

---

This change is 

[what-the-diff]

PR Summary

• Enhancement of export features
  The addition of BasicColumnStatistics and TableStatistics exports in the library module allows these types to be utilized across different modules.
• Introduction of new testing utilities
  A new test utilities module is introduced, which includes test_utils, a component for easier optimization testing.
• Creation of test_utils.rs file
  A new file test_utils.rs has been created with the added utility TestStatisticsBuilder. This utility aids in managing and applying statistics to query plans, along with helper methods to manipulate said plans.
• Addition of tpcds_test.rs file
  The newly introduced tpcds_test.rs file incorporates a test case structure and a specific test for TPC-DS SQL queries. This includes setting up and executing queries with statistics.
• Exposure of optimize function
  The optimize function has been exported to allow access from other modules, enhancing its accessibility.
• Visibility alteration of plan field
  The visibility of the plan field has been changed from pub(crate) to pub, ensuring easy access in other parts of the codebase for increased flexibility.

[forsaken628]

Would it be easier to maintain with goldenfile::Mint?

Something like

databend/src/query/functions/tests/it/scalars/array.rs

Line 25 in 3d378ee

let mut mint = Mint::new("tests/it/scalars/testdata");

[BohuTANG]

Would it be easier to maintain with goldenfile::Mint?

Something like

databend/src/query/functions/tests/it/scalars/array.rs

Line 25 in 3d378ee

let mut mint = Mint::new("tests/it/scalars/testdata");

Hmm, this is not file to file compare, the yaml file aims to store some metadata and result for more structured, need deserialize them and compare the result.
I am not sure how to use goldenfile.