Properly mark `*_Fourier.axes_description` data items as deprecated

[vaitkus]

The human-readable descriptions of the _atom_sites_displace_Fourier.axes_description and _atom_sites_rot_Fourier.axes_description data items states that they are deprecated:

DEPRECATED. This data name should not be used. It has been replaced
by the ATOM_SITES_AXES data names.

This deprecation should also be explicitly marked using attributes from the DEFINITION_REPLACED category. For example, for the _atom_sites_displace_Fourier.axes_description data item it could look something like:

loop_
      _definition_replaced.id
      _definition_replaced.by
         1                        '_atom_site_displace_Fourier.matrix_seq_id'
         2                        '_atom_sites_axes.matrix_seq_id'
         3                        '_atom_sites_axes.transf_description'
         4                        '_atom_sites_axes.matrix'

[vaitkus]

After the merge of PR #30, the _atom_sites_displace_Fourier.axes_description data item is now marked as deprecated and replaced by the three _atom_sites_axes.* data items from the example provided in this issue. I would also suggest the following additional changes:

• _atom_sites_displace_Fourier.axes_description: also add _atom_site_displace_Fourier.matrix_seq_id as a replacement item since it indicates how the two loops are linked together.
• _atom_sites_rot_Fourier.axes_description : add a similar deprecation loop since none currently exists.