feat: Introduce Advanced Query Builder API

[sriramk03]

Description

This pull request introduces an Advanced Query Builder API to PipelineDP. This new API provides a more flexible and extensible way to construct and execute differentially private queries.

Key features of this change include:

• A new advanced_query_builder.py module that contains the core logic for the query builder.
• An AdvancedQueryBuilder class that allows for chaining of operations to construct complex queries.
• Support for various aggregations such as COUNT, SUM, MEAN, VARIANCE, and QUANTILES.
• Integration with the local backend for query execution.

Affected Dependencies

There are no new external dependencies introduced in this pull request.

How has this been tested?

• A new test suite for the Advanced Query Builder has been added in tests/advanced_query_builder_test.py. This includes end-to-end tests that verify the functionality of the builder with the local backend.

Checklist

• [ x ] I have followed the Contribution Guidelines and Code of Conduct
• [ x ] I have commented my code following the OpenMined Styleguide
• [ x ] I have labeled this PR with the relevant Type labels
• [ x ] My changes are covered by tests