feat(vic3): Validate modifier flow with add_modifier

[BrknRobot]

warning(modifiers): `interest_group_ig_industrialists_pol_str_mult` is a modifier for interest group and will not flow from state scope
   --> [Vic3] common/static_modifiers/content_4_modifiers.txt
403 |     interest_group_ig_industrialists_pol_str_mult = 0.05
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   --> [Vic3] events/russo_chinese_events.txt
379 |              add_modifier = modifier_vladivostok_civilian
    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ <-- from this temporary modifier
332 |         random_state = {
    |         ^^^^^^^^^^^^ <-- scope was deduced from `random_state` here
    = Info: valid modifiers are for building, state, goods
    = Wiki: https://vic3.paradoxwikis.com/Modifier_types#Modifier_type_flow

untidy(modifiers): script only modifier does not use a valid prefix
    --> [Vic3] common/modifier_type_definitions/00_modifier_types.txt
2800 | dummy_modifier_type={
     | ^^^^^^^^^^^^^^^^^^^
     = Info: consider using a prefix to ensure the modifier flows to the intended scope
     = Wiki: https://vic3.paradoxwikis.com/Modifier_types#Modifier_type_flow

[amtep]

Copy paste error in comment :)

[amtep]

Copy paste error in comment