Organize BHoM View objects and converts

[michal-pekacki]

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Description:

• Update IView object with missing properties such as Template, CropRegionVisible, AnnotationCropVisible
• Add missing objects that represents Elevation, Section, 3DView
• Add missing converts

[FraserGreenroyd]

The title does not describe how they will be organised, can the description in the issue be enhanced to provide that description @michal-pekacki to aid the review at the other end 😄

[michal-pekacki]

@FraserGreenroyd updated!