pybind: Add S1Angle bindings#562

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deustis wants to merge 3 commits intogoogle:masterfrom

deustis:deustis/s1angle_bindings

Commits on Apr 7, 2026

pybind: Add S1Angle bindings
deustis
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Commits on Apr 10, 2026

Address PR feedback: rename IsNormalizedAngle, drop sin_cos, add __abs__
deustis
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Commits on Apr 21, 2026

Address PR feedback: properties, absl::StrCat, instance trig methods
deustis
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