Add installation improvements and testing infrastructure

[seqasim]

Summary

This PR improves the LFPAnalysis package for public use by fixing installation issues, adding a testing framework, and setting up CI/CD.

Changes

Installation Improvements

• Fixed requirements.txt formatting (removed leading spaces)
• Removed GitHub API dependency from setup.py that could cause installation failures
• Added proper error handling and package metadata to setup.py
• Added pip install option as recommended installation method

Testing Infrastructure

• Added pytest testing framework
• Created test suite with:
  • Import tests for all modules
  • Function tests for key utilities (mean_baseline_time, find_nearest_value, moving_average)
  • Test configuration via pytest.ini
• Added pytest to requirements

CI/CD

• Added GitHub Actions workflow to run tests automatically on push/PR
• Tests run on Python 3.8, 3.9, and 3.10

Documentation

• Updated README with:
  • Pip install instructions (recommended)
  • Updated conda installation steps
  • Testing section with instructions
  • Updated upgrade instructions for both installation methods

Testing

• All tests pass locally
• Installation verified with pip install -e .
• Test suite runs successfully with pytest tests/ -v

Impact

• Makes installation more reliable and user-friendly
• Provides testing framework for future development
• Enables automated testing on GitHub
• No breaking changes to existing functionality

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Note

Adds GitHub Actions tests, a pytest-based test suite, packaging/installation fixes, documentation updates, and a minor TFR API adjustment.

• CI/CD:
  • Add GitHub Actions workflow /.github/workflows/tests.yml running pytest on Python 3.8–3.10.
• Testing:
  • Introduce pytest config pytest.ini and test suite under tests/ (import checks and basic unit tests for key utilities).
  • Add pytest to requirements.txt.
• Packaging/Installation:
  • Simplify setup.py (remove external API calls, add metadata, robust README/requirements loading, python_requires, classifiers, package_data).
  • Fix requirements.txt formatting; include pytest.
  • Update README.md with pip/conda install, update, and testing instructions.
• Code:
  • In LFPAnalysis/lfp_preprocess_utils.py, switch TFR save object to mne.time_frequency.EpochsTFRArray and tidy docstrings.
• Docs/Notebooks:
  • Add LFPAnalysisBook/module-02-01_AdvancedPreprocessing.ipynb and expand resource links in Jupyter Book modules.

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