Build a CLI

[roysti10]

related to #63

Instead of having each effect to be run seperately, It would be better if it was run in a single command line interface

Proposal

1. A cli tool in the format artcv effect <effect-name> --file <image file name> --output <output file location>
2. I would also like to add a feature to add a option for folder of images , in which all the images in the folder are shown to the effect
3. Remove args in all effects and run it in the main,py file itself to avoid confusion in arguments
4. Folder structure

   ArtCV
   │   README.md
   │   LICENSE    
   │   requrements.txt 
   └───art_cv
   │   │   effects
   │              └───  effect1.py
   │   │              | effect2.py
   │   │              | and so on...
   │   │    __init__.py
   │   |    main.py

   This folder structure makes it clean and easier to apply tools like black, flake8 or write tests, I was also contemplating on how to sort the effects since there are a lot

If this is fine with you, I would like to get started