Add UniNews logo

[TolisSth]

Add the UniNews logo, the logo should be added under data/assets/ folder, if no such folder exists, you should create the folder.

[JHON12091986]

I'll take this task. I will create the data/assets/ folder and add a temporary UniNews logo. I recommend using a simple open-source logo or a placeholder SVG. Please confirm if you have a specific logo in mind, or I will propose one.