Add student information for Furkan Gül

[fuvkans]

Describe your changes

Checklist

• [ x ] I have read the [CONTRIBUTING]
• [ x ] I have performed a self-review of my own code
• [ x ] I have run the code locally and it works as expected
• [ x ] I have commented my code, particularly in hard-to-understand areas

Screenshots (if appropriate)

[fuvkans]

Add student information for Furkan Gül