New options "Frist" and "last"

[Jueff]

I would suggest two new options for "operation"

first: the minimum time of day where value of the input sensor if above a configureable value
last: the maximum time of day where value of the input sensor if above a configureable value

Background: I wan't to monitor the time when my solar production starts and ends for each day.

e.g.
input sensor: sensor.power_production_current
operation: first
value: 100
unit: kWh
interval: 150