Add automatic testing to InOutModule

[FelixCAAuer]

No description provided.

[Copilot]

Pull Request Overview

This PR adds automatic testing for the InOutModule by introducing a new test suite for ExcelReader/ExcelWriter, updating import statements to use relative paths instead of the InOutModule package prefix, and adding a CI workflow to run tests across multiple OS environments.

• Introduces tests for reading and writing Excel files.
• Updates module import paths to use relative imports.
• Adds a CI pipeline configuration.

Reviewed Changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
tests/test_ExcelReaderWriter.py	Adds tests for ExcelReader and ExcelWriter functionality.
printer.py	Moves a pyomo import to an internal scope to prevent circular imports.
environment.yml	Provides environment configuration for dependencies.
ExcelWriter.py	Updates import references and the cell style method signature.
ExcelReader.py	Updates import references for Printer.
CaseStudy.py	Refactors parameter name from example_folder to data_folder.
.github/workflows/ci.yaml	Adds CI workflow to run tests on multiple OS platforms.

Comments suppressed due to low confidence (2)

CaseStudy.py:13

• The parameter was renamed from 'example_folder' to 'data_folder' in the signature, but corresponding docstrings or inline comments might not reflect this update. Consider reviewing and updating any documentation or comments to maintain consistency.

def __init__(self, data_folder: str, do_not_merge_single_node_buses: bool = False,

tests/test_ExcelReaderWriter.py:10

• [nitpick] The variable name 'ew' could be made more descriptive (e.g., 'excel_writer') to improve readability in the test code.

ew = ExcelWriter()