Feature/add cleaner

[devZenta]

This pull request introduces a new data cleaning script and refactors the IMDB scraper to improve code consistency and readability. The main changes include the addition of a cleaner.py script for preprocessing movie data, standardizing string formatting and selector usage across the scraper, and minor improvements to path handling in the main entry point.

New functionality:

• Added src/cleaner/cleaner.py to clean and preprocess raw movie metadata, selecting relevant columns and removing rows with missing values. The output is saved to imdb_cleaned.csv and a preview is printed.

Scraper refactoring and consistency improvements:

• Standardized all string quotes to double quotes and reformatted selectors and dictionary keys throughout src/scrapping/scraper.py for consistency and readability. [1] [2] [3] [4] [5] [6] [7]
• Improved selector formatting and handling for movie details extraction (title, rating, duration, genres, director, actors) to make the code easier to maintain and less error-prone. [1] [2] [3] [4]
• Updated the CSV export logic in the scraper to use consistent fieldnames and quoting.

Minor improvements:

• Cleaned up path handling in src/main.py by standardizing quotes and import order.