[ADD] Song Endpoint

## Feature
Song Endpoint

## Why?
Allow users to access songs from Imagine Dragons

## Example of Feature? (Optional)
GET/request to a ```/public/song/{id}```
```
https://api.unnecessarylibraries.com/imdragons/v1/public/song
```

### Outcome?
```json
{
"SONG_LIST": [
   {
      "SONG": "DATA"
    },
    {
     "SONG": "DATA"
    }
 ]
}
```