feature: Added About Page UI

[shubhrad1]

Added UI for About Page with description about the Project, Features and Deep-Learning Models. Closes #51

[AryanNanda17]

@shubhrad1, Can you remove

the above part and add

the above one in the feature section. Remove the above one from deep learning models. Thanks

[AryanNanda17]

Also, please add a navbar icon about in the home page which links to this one.

[ParamThakkar123]

@shubhrad1 music visualization won't be a part of deep learning models, it should be a feature