* refactor: datumize security levels
* refactor: implement `SSsecurity_level` for handling security level related stuff
* feat: returns back old `delta_alarm` sound
* refactor: adjust existing code to use `SSsecurity_level`
* fix: remove redundunt new init order
* fix: fix type in var
* refactor: apply reviewer changes
* fix: replace `can_fire=FALSE` with `ss_flags = SS_NO_FIRE`, as subsystem will never fire
* fix: use `flags` instead of `ss_flags` for subsystem
Co-authored-by: SteelSlayer <42044220+SteelSlayer@users.noreply.github.com>
* fix: replace old security level interactions
* feat: implement `Recover` proc for `SSsecurity_level`
* refactor: add clearer doc for `security_level_set_timer_id` propery of `SSsecurirt_level`
* refactor: swap `security_level` datum properties to make it clearer to read
* refactor: move initialization code from `New` to `Initialize` for `/obj/machinery/firealarm`
* fix: revert back `delta_alarm` annoing sound, use `delta_claxon` on change to delta security level
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Co-authored-by: SteelSlayer <42044220+SteelSlayer@users.noreply.github.com>
