Add Precipitation Information to Forecast Entity

[truffshuff]

Is your feature request related to a problem? Please describe.
Not related to a problem.

Describe the solution you'd like
Include daily and hourly precipitation information that is available in tempest api to forecast entity.

fields that I’m specifically looking for: "precip_icon","precip_probability","precip_type"

Field definitions from tempest api:
precip_probability
number
precip_icon
string
chance-rain chance-snow chance-sleet
precip_type
string
rain snow sleet

[briis]

Once I merge the mentioned Pull Request,precipitation_icon and precipitation_type will be added. Precipitation probability is already present. It is called precipitation_probability.