Config for set a setTimeZone in config file

[PhilippeThouvenot]

Hi,
could you provide an option to set a default config value for setTimeZone to avoid this line on each date :
#[WithCast(DateTimeInterfaceCast::class, setTimeZone: 'Europe/Brussels')]

Thank you.

[PhilippeThouvenot]

I've made a pull request #799