Label for better filtering

[herbievine]

Is your feature request related to a problem? Please describe.
I think it would a great feature to have a 'labels' attribute to each plant. This can help with querying labels, along with displaying custom plants to the user based on labels

Describe the solution you'd like
A label attribute to the plant. Could be an Array like ['indoor', 'fruit'] or ['healthy', 'vegetable']

Describe alternatives you've considered
n/a

Additional context
Could be queried like this (for Indoor and Fruit):

https://trefle.io/api/v1/plants?token=TOKEN&query=indoor&query=fruit