feat: add helper utilities

[musale]

This pull request introduces a new helper module for idempotency key generation and adds comprehensive tests for its functionality. It also updates the code coverage report to reflect the new code and its test coverage.

Helpers and Idempotency Utilities:

• Added a new idempontency.py module in gavaconnect/helpers with the idempotency_headers function, which generates idempotency headers for HTTP requests, using a provided key or generating a UUID4 if none is given.
• Added a module docstring to gavaconnect/helpers/__init__.py.

Testing:

• Added tests/test_idempotency.py with extensive unit tests for the idempotency_headers function, covering cases for provided keys, auto-generated UUIDs, empty and whitespace keys, and ensuring correct types and uniqueness.

Coverage Reporting:

• Updated coverage.xml to include the new helpers package and reflect increased code and test coverage resulting from the new helper and its tests. [1] [2] [3]

[Copilot]

Pull Request Overview

This pull request introduces a new helper module for idempotency key generation in HTTP requests and provides comprehensive test coverage for the functionality.

• Added idempotency_headers function to generate idempotency headers with either provided keys or auto-generated UUIDs
• Created comprehensive unit tests covering various edge cases and behavior validation
• Updated coverage reporting to reflect the new code and test coverage

Reviewed Changes

Copilot reviewed 4 out of 5 changed files in this pull request and generated 2 comments.

File	Description
gavaconnect/helpers/init.py	Added module docstring for the new helpers package
gavaconnect/helpers/idempontency.py	Implemented the core idempotency_headers function with UUID fallback
tests/test_idempotency.py	Added comprehensive test suite covering all function behaviors and edge cases
coverage.xml	Updated coverage report to include the new helpers package and reflect increased coverage

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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