Restricted Periods

This script implements realistic restricted periods for the application of organic fertilizers (slurry, digestate, manure), based on real-world fertilizer ordinances.
Turning on the implements is technically blocked during these periods.
Detailed Regulations:
Slurry & Digestate (Liquid):
Absolute Ban: November, December, January.
Conditional Ban: February, if the temperature is below 0°C (frost).

Manure (Solid):
Absolute Ban: December, January.

Functionality:
If the player attempts to turn on a slurry tanker or manure spreader during a restricted period, the action is blocked, and a warning message (e.g., "Restricted Period!" or "Ground Frost!") appears on the screen.