Add option --file to the parser
New script to work on a given geometry

The script allows the user to perform different operations
on a given body:
- translation
- rotation
- scaling
- new discretization
Add parser and fix bugs

Add a parser, see --help argument to have the list.
Fix some bugs in the rotation of the body.
Add method to write the output into a file.
Make the code generic with the parser.
Add some geometries to resources folder
Merge branch 'body_discretization'