Add feedback

[hrishikeshpaul]

We must have a section where we can get feedback from the users. Below are the work items to achieve that.

Front end is more or less done to accept the feedback from the users.

Backend:

1. Create a collection called feedback:

{
    subject: String,
    message: String,
    email: String
}

2. Create a post route to add the user's feedback to this collection.
3. Link it with front end.