feat: Add Python 3.11+ compatibility

[Coben-3d]

🎯 Purpose

Add support for Python 3.11 and 3.12 to ensure Octolapse works with modern OctoPrint installations.

🔧 Changes

• Updated setup.py to include Python 3.11 and 3.12 in supported versions
• Merged latest changes from upstream/master
• Resolved packaging conflicts
• Maintained backward compatibility with Python 2.7 and 3.6+

✅ Testing

• Successfully builds on Python 3.11
• Compatible with OctoPrint 1.10.x
• No breaking changes to existing functionality

📌 Related Issues

Resolves compatibility issues preventing installation on Python 3.11+

💡 Notes

This PR ensures Octolapse can be installed on systems running newer Python versions while maintaining support for legacy systems.

---

Note

Refactors setup.py to standard setuptools with versioneer fallback, platform-specific C++14 flags, dynamic requirements/package data, Python 3.11 classifiers, and updated C++ extension sources/paths.

• Build/Packaging:
  • Switch to direct setuptools.setup(...) (replace OctoPrint-specific setup helpers) and integrate cmdclass with custom build_ext.
  • Add Versioneer import with safe fallback for version/cmdclass.
  • Read dependencies from requirements.txt via get_requirements and gather package data via package_data_dirs.
  • Update classifiers to include Python 3.11.
• Compilation:
  • Introduce platform-specific C++14 flags for Windows, macOS, and Linux; always define DEBUG_chardet and IS_PYTHON_EXTENSION.
  • Replace extension module config: rename to octoprint_octolapse.gcode_parser and move sources to octoprint_octolapse/*.cpp files.
• Plugin metadata:
  • Define entry_points for octoprint.plugin and explicitly list packages including octoprint_octolapse_setuptools.

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