Elimination of Document Header and Footers

### Requested Feature

I am working on a document extraction problem, and it seems that Docling keeps treating some headers and footers as sections due to their format. Is there any possibility of providing a set of known headers or footers to automatically exclude them from the extracted text?

### Alternatives

I am currently removing them manually, but it seems that Docling should at least be able to detect potential headers and footers, as most official documents follow a specific structure. In my case, I am identifying headers and footers in a separate process using an external library.