Firefighter Careers

This adds firefighting careers to the game, as well as two new XP's and EMT, Paramedic courses available at the Firehouse. Possible jobs: - Firefighter Cadet - Firefighter - Firefighter-EMT - Paramedic - Fire Chief Update 2 (14/08/2025) Rebalanced salaries so that they are not overpowered anymore. Update 1 (12/08/2025) - Added new education courses: EMT certificate, and Paramedic Diploma. Both available at the Firehouse, as I couldn't figure out how to easily add it to the University courses. - Rebalanced the food in work as suggested by @Lansetti (thank you for the feedback!) - Rebalanced the salary between a Firefighter (now is $3680) and Firefighter-EMT ($4820). Paramedic's salary is $5995. - Fire Chief job requires now any higher education diploma (as well as the Firefighting XP)