PodCast: handle user rating

[souvikbasu]

Podcast will have an array of

userRatings : [
    {
        username: String,
        rating: Number (1-5)
        review: String
    }
]

and a starRating field which will be done on the podcast card.
The starRating field will calculated every time a podcast POST, PUT or DELETE is called. It will be calculated as an average of all the user rating in the array userRatings.

[Athira2199]

Hi would like to take up this issue