[Feature]: Add a new -P flag to apply a Pixelate filter that reduces image detail by averaging color blocks to create a mosaic effect.

[swastijain132005]

So, what is it about?

Implement a Pixelate filter to give images a mosaic-like appearance by dividing the image into small square blocks and replacing each block with its average color.
This filter will help simulate retro or privacy blur effects and can be useful for artistic or data-hiding purposes.

Tasks:

Add a new function apply_pixelate() in helpers.c and declare it in helpers.h.

Implement logic to process the image in small pixel blocks (e.g., 5x5 or adjustable block size).

Add command-line support with the flag -P in filter.c.

Update README.md with filter description and usage example.

Code of Conduct

• I agree to follow this project's Code of Conduct

[harshsankhla18]

Dont forget to write function prototype in helpers.h , update the cli tag n filter.c and update the readme.md with this algorithm. Contact me if need any help.

[indrasuthar07]

@harshsankhla18 can i work on it ?

[harshsankhla18]

OKay. but you need to solve it for all the image format as easy was for bmpl only but this is for png and jpg too