Support filter / search / sort in the populate


*mongoose populate with sort*

```
WizardModel.find({})
.populate({
path: 'spells',
options: { sort: [['damages', 'asc']] }
})

```
*mongoose populate with match*
```

WizardModel.find({})
.populate({
path: 'spells',
match: { level_required: { $gte: 3 } }
})
```
