Coding - Add conversion utilities for STEP geometrical and visual enumerations (...

Coding - Add conversion utilities for STEP geometrical and visual enumerations (#545)

- Introduced RWStepGeom_RWTransitionCode for converting StepGeom_TransitionCode to/from string representations.
- Refactored RWStepGeom_RWTrimmedCurve to utilize RWStepGeom_RWTrimmingPreference for trimming preference conversions.
- Created RWStepGeom_RWTrimmingPreference for handling StepGeom_TrimmingPreference enumerations.
- Updated RWStepGeom_RWUniformCurve and related classes to use RWStepGeom_RWBSplineCurveForm for B-spline curve form conversions.
- Added RWStepGeom_RWUniformSurface and related classes to use RWStepGeom_RWBSplineSurfaceForm for B-spline surface form conversions.
- Implemented RWStepShape_RWBooleanOperator for boolean operator conversions in STEP shapes.
- Refactored RWStepShape_RWBooleanResult to utilize RWStepShape_RWBooleanOperator for boolean operator handling.
- Introduced RWStepVisual_RWCentralOrParallel for central or parallel projection type conversions.
- Added RWStepVisual_RWSurfaceSide for surface side enumeration conversions.
- Updated RWStepVisual_RWSurfaceStyleUsage to use RWStepVisual_RWSurfaceSide for handling surface side.
- Created RWStepVisual_RWTextPath for text path enumeration conversions.
- Refactored RWStepVisual_RWTextLiteral to utilize RWStepVisual_RWTextPath for text path handling.
- Updated RWStepVisual_RWViewVolume to use RWStepVisual_RWCentralOrParallel for projection type conversions.