Replace placeholder image links with filesystem images

[fsheikh]

All instances of online placeholder images should be replaced with a sample image present inside client/data directory. e.g.

sample_code/client/src/Pages/Home.jsx

Line 37 in c681696

<img src="https://via.placeholder.com/150" className='p-2 bg-slate-700 rounded-lg' alt="Blog Image" />

should be replaced. Please check all other instances by searching in the code.

Sample image to replace this can be something simple like