Port write_equation_tags to write_latex_static_model and write_latex_original_model

See https://github.com/DynareTeam/dynare/commit/14f4544a29eac182ff1f5840e5f9cc78b9efa7e0#commitcomment-21632978

@stepan-a Can you please reopen this ticket. The commit message to #1441 was wrong and this ticket was inadvertently closed.

@JohannesPfeifer Done.

This is still buggy. When I try write_latex_static_model(write_equation_tags); nothing happens, but write_latex_original_model(write_equation_tags) works.

reopened

added bug label and removed enhancement label

The code was already there. There was a bug fixed by preprocessor@05f00aa3

closed

reopened

closed