🔭 Stellar: Added Planetary Angular Size and Sensor Projection calculations

[pozar87]

Added planetary size projection in pixels and angular diameter calculations to the apts library.

💡 What:

• Implemented get_planet_angular_diameter in apts/utils/planetary.py using the high-precision formula δ = 2 ⋅ arcsin(R/D).
• Added planetary_size_in_pixels to the OpticalPath class in apts/optics.py.
• Conducted a data audit and updated the ZWO ASI224MC specifications with manufacturer-verified data (IMX224 sensor, 3.75µm pixels, 19.2ke- full well).
• Mapped PLANET_RADII_KM using IAU 2015 Standards.

🎯 Why:
Astrophotographers need to know how large a planet will appear on their sensor to select the optimal focal length and Barlow lens. These additions provide precise projection data based on the real-time distance to the target.

📚 Source:

• Formula: Guy Ottewell, 'Astronomical Companion'.
• Data: IAU 2015 Resolution B3 on recommended nominal constants for fundamental astronomy.

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PR created automatically by Jules for task 11398918904001804077 started by @pozar87

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