Move post_process_colvar() from colvar_types.F into colvar_utils.F

git-svn-id: svn://svn.code.sf.net/p/cp2k/code/trunk@14430 bac0169d-1eea-4375-b5f6-f89d2ced9994
Move high-level routines from particle_types.F into new particle_methods.F

git-svn-id: svn://svn.code.sf.net/p/cp2k/code/trunk@14431 bac0169d-1eea-4375-b5f6-f89d2ced9994