ci: add coverage and ruff (#1383)

* add coverage calculation and push

Signed-off-by: Michele Dolfi <dol@zurich.ibm.com>

* new codecov version and usage of token

Signed-off-by: Michele Dolfi <dol@zurich.ibm.com>

* enable ruff formatter instead of black and isort

Signed-off-by: Michele Dolfi <dol@zurich.ibm.com>

* apply ruff lint fixes

Signed-off-by: Michele Dolfi <dol@zurich.ibm.com>

* apply ruff unsafe fixes

Signed-off-by: Michele Dolfi <dol@zurich.ibm.com>

* add removed imports

Signed-off-by: Michele Dolfi <dol@zurich.ibm.com>

* runs 1 on linter issues

Signed-off-by: Michele Dolfi <dol@zurich.ibm.com>

* finalize linter fixes

Signed-off-by: Michele Dolfi <dol@zurich.ibm.com>

* Update pyproject.toml

Co-authored-by: Cesar Berrospi Ramis <75900930+ceberam@users.noreply.github.com>
Signed-off-by: Michele Dolfi <97102151+dolfim-ibm@users.noreply.github.com>

---------

Signed-off-by: Michele Dolfi <dol@zurich.ibm.com>
Signed-off-by: Michele Dolfi <97102151+dolfim-ibm@users.noreply.github.com>
Co-authored-by: Cesar Berrospi Ramis <75900930+ceberam@users.noreply.github.com>

docs/examples/develop_formula_understanding.py

@@ -3,8 +3,8 @@
 # It does not run the actual formula understanding model.
 
 import logging
+from collections.abc import Iterable
 from pathlib import Path
-from typing import Iterable
 
 from docling_core.types.doc import DocItemLabel, DoclingDocument, NodeItem, TextItem
 
@@ -49,7 +49,6 @@ class ExampleFormulaUnderstandingEnrichmentModel(BaseItemAndImageEnrichmentModel
 
 # How the pipeline can be extended.
 class ExampleFormulaUnderstandingPipeline(StandardPdfPipeline):
-
     def __init__(self, pipeline_options: ExampleFormulaUnderstandingPipelineOptions):
         super().__init__(pipeline_options)
         self.pipeline_options: ExampleFormulaUnderstandingPipelineOptions
@@ -85,7 +84,7 @@ def main():
             )
         }
     )
-    result = doc_converter.convert(input_doc_path)
+    doc_converter.convert(input_doc_path)
 
 
 if __name__ == "__main__":