Support per-instrument Python packages

[mikelangmayr]

• Add CAMERAD_MODULE_NAME, defaulting to camera_interface, which sets both the pybind11 module name and the target's OUTPUT_NAME so the import name and the built filename agree
• Mark the Camera binding py::module_local(), without which two differently named builds still fail to import together with type "Camera" is already registered
• Add packaging/tracking, a pyproject.toml that installs camera-interface-tracking providing the module camera_interface_tracking, with the instrument and module name fixed rather than passed by the caller
• Document both in the README
• Verified on macOS: the plain C++ build and the default module name are unchanged; camera-interface and camera-interface-tracking install into one environment and import together with distinct Camera types

[github-actions]

PR Preview Action v1.8.1
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2026-09-24 17:52 UTC