Preprocessor directives are falsely reported as E001 Syntax error

[davidpfister]

On Windows 10, with fortitude 0.6.1, when using preprocessor directive (#define) before the module, fortitude reports a synthax error

#define set_error(id, msg) \
 if (present(ierr)) ierr = id; \
if (present(errmsg)) errmsg = msg;
module test
...

[ZedThree]

This is unfortunately coming from the tree-sitter-fortran grammar, currently it can't handle multiline preprocessor #defines like this, there's a clash with the line continuations.

I'd like to improve this aspect, but the preprocessor complicates the grammar a lot unfortunately!