feat: solve 2303. Calculate Amount Paid in Taxes with unit testing

[mathusanm6]

closes #82

[Copilot]

Pull Request Overview

This PR implements a solution for LeetCode problem 2303: "Calculate Amount Paid in Taxes" with comprehensive unit testing support. The implementation includes both Python and C++ versions along with their respective test files.

Key changes:

• Added complete solution implementation for tax calculation problem
• Created unit tests for both Python and C++ implementations
• Updated build system to use shortened Makefile target names (lint-py, format-py)

Reviewed Changes

Copilot reviewed 11 out of 12 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
problems/calculate_amount_paid_in_taxes/config.yml	Problem configuration with metadata and complexity analysis
problems/calculate_amount_paid_in_taxes/calculate_amount_paid_in_taxes.py	Python implementation of tax calculation algorithm
problems/calculate_amount_paid_in_taxes/calculate_amount_paid_in_taxes.h	C++ header file with function declaration
problems/calculate_amount_paid_in_taxes/calculate_amount_paid_in_taxes.cc	C++ implementation of tax calculation algorithm
problems/calculate_amount_paid_in_taxes/calculate_amount_paid_in_taxes_test.py	Python unit tests using pytest
problems/calculate_amount_paid_in_taxes/calculate_amount_paid_in_taxes_test.cc	C++ unit tests using Google Test
Makefile	Updated target names from format-python/lint-python to format-py/lint-py
hooks/pre-commit	Updated to use new shortened Makefile target names
.github/workflows/presubmit-python.yml	Updated CI workflow to use new target names
.github/workflows/linter-python.yml	Updated linter workflow to use new target names
README.md	Updated documentation and solution count badges

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}