Foundation Classes, gp - Mark geometry APIs noexcept/constexpr (#798)

Foundation Classes, gp - Mark geometry APIs noexcept/constexpr (#798)

- Add noexcept to many small mutating and non-throwing methods (Mirror, Mirrored, SetMirror, SetTranslationPart, etc.) across gp classes.
- Annotate trivial getters, translators and small computations as constexpr where applicable (SetLocation/SetPosition, Area/Length/Radius/Volume, Axis/Location/Position accessors, Translate helpers).
- Update headers and source files to improve noexcept/constexpr conformance for gp geometry and math types, enabling better optimization and stronger exception-safety guarantees.