Pavimentados

Changed
- Sets number of classes parameter in the model configuration file.

Changed
- Update pre-commit hooks.
Fixed
- Fix first detection of road signals. Wrong class assigned in some situations.
- Fix position column in the signals dataframe.

Added
- `Signals detected`: add boxes column on results dataframe.
Changed
- `Signals detected`: remove duplicated detections resulting from stopped vehicle.

Added
- `notebooks` folder for process put samples and notebooks
- Samples of images and videos processing

Added
- `models` folder for extract downloaded model tar file
Fixed
- Removed unused imports
- Line breaks for too long lines
- F841 removed unused variables
- E711 Change comparisons to None
- F541 f-string is missing placeholders
- E712 comparison to True
- E741 ambiguous variable names
- E721 do not compare types, use 'isinstance()'
- Sonarcloud: Make sure that using this pseudorandom number generator is safe here

Fixed
- Fix tensorflow and open-cv version on requirements.txt


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