Explicitly reexport all attributes meant as public

[sanmai-NL]

Requested feature

Mypy configured strictly complains that some attributes, open for import by your users, aren't explicitly exported. This is a quality issue, since it muddies the boundary between public and non-public symbols/attributes.

src/app/data/unstructured/document/__init__.py:5: error: Module
"docling.datamodel.document" does not explicitly export attribute
"DoclingDocument"  [attr-defined]
    from docling.datamodel.document import DoclingDocument, SectionHeaderI...
    ^
src/app/data/unstructured/document/__init__.py:5: error: Module
"docling.datamodel.document" does not explicitly export attribute
"SectionHeaderItem"  [attr-defined]
    from docling.datamodel.document import DoclingDocument, SectionHeaderI...
    ^
src/app/data/unstructured/document/__init__.py:5: error: Module
"docling.datamodel.document" does not explicitly export attribute "TableItem" 
[attr-defined]
    from docling.datamodel.document import DoclingDocument, SectionHeaderI...
    ^
src/app/data/unstructured/document/__init__.py:5: error: Module
"docling.datamodel.document" does not explicitly export attribute "TextItem" 
[attr-defined]
    from docling.datamodel.document import DoclingDocument, SectionHeaderI...
    ^
src/app/data/unstructured/pipeline/documents/pipeline_documents.py:8: error:
Module "docling.datamodel.document" does not explicitly export attribute
"DoclingDocument"  [attr-defined]
    from docling.datamodel.document import ConversionResult, DoclingDocume...

Alternatives

Configuring Mypy to be more lax, reducing the benefits of this check. Since the solution is inexpensive and has no downsides, I prefer for it to be solved directly.