Feat: Add github username check for invalid usernames to alert user that they have entered a wrong one

[Miran-Firdausi]

Is your feature request related to a problem? Please describe.
Currently, if a user enters a non-existent GitHub username, subsequent actions like fetching GitHub stats fail without feedback. This results in broken or empty displays, causing confusion.

Describe the solution you'd like
A simple check alerting "No username was found".

Describe alternatives you've considered
Hide dynamic cards or sections that rely on valid GitHub data when an invalid username is entered.

Additional context
Add any other context or screenshots about the feature request here.

[Miran-Firdausi]

If you are okay with it, I would like to work it under hacktoberfest.

[VishwaGauravIn]

Please explain your approach and how are you planning to achieve this.

[Miran-Firdausi]

So there is this API by GitHub https://api.github.com/users/ which we can utilize.

If you hit it with the right username, it responds back with your details else it gives you a 404.

Check this Screenshot:

[VishwaGauravIn]

Okay, create the demo for it.
Please keep in mind:

1. API fetching and response should be fast enough, so that users doesn't feel it to be hindering/slow.
2. There must be a check if this API fails
3. Check for rate limiting of this API

[Miran-Firdausi]

Okay, I will implement this feature with proper checks.
There are rate limits like unauthenticated ones are restricted to 60 req/hour. With PAT it goes upto 5000 req/hour.
So I can implement it like when the rate limit is reached, it fallbacks to the current behaviour.
I can also provide an option to provide PAT which reads from the environment variable. If you want to provide, it increases the rate limit, but we can get it worked without it too.