0028347: Reuse OCCT implementation for producing end-user documentation for Products

0028347: Reuse OCCT implementation for producing end-user documentation for Products

Updated destination directory for generated by gendoc proc pdf files.

Added additional option "-update_images_size" for gendoc procedure to update width of images in *.md files during pdf generation for @figure alias.

Documentation was updated to use alias @figure instead of outdated @image

Added support of svg image format in procedure OCCDoc_UpdateImagesSize.

Added generation of overview for product components.

Added generation of products refman/chm for each component.