[Feature]: Add shimmer effect while the data is loading

[Palakkgoyal]

• [x] Would you like to take up this task?
• [x] Are you from GSSoC'23?

| ✨ | Feature request | Currently, there is a loader that shows until the cards are loaded. I want to add shimmer effect which will look more good for the website.

|-----|---------------------------------| | Is your feature request related to a problem? | Kindly provide an explanation of the problem that your feature aims to resolve. | | Describe the solution you'd like | Please present a concise and precise description of the solution you envision. | | Describe alternatives you've considered | Elaborate on any alternative solutions or features that you have already evaluated as potential approaches. | | Additional context | Include any supplementary information, contextual details, relevant screenshots, or supporting materials that can aid in better understanding and supporting your feature request. |