feat: add basic image filtering filter.py

[Mouiad-JRA]

Describe your change:

• [X] Added Some basic image filtering

Checklist:

• [X] I have read CONTRIBUTING.md.
• [X] This pull request is all my own work -- I have not plagiarized.
• [X] I know that pull requests will not be merged if they fail the automated tests.
• [x] This PR only adds one python file. To ease review, please open separate PRs for separate algorithms.
• [x] All new Python files are placed inside an existing directory.
• [X] All functions and variable names follow Python naming conventions.