LuaEquipmentGrid flag "locked"

[eradicator]

What?

A flag on an equipment-grid prototype that defines the grid as not player-interactable.

Why?

To be able to make custom vehicles/armor that come with some additional built-in modules that can't be replaced or removed, in order to present some interesting balance alternatives to "just fill it up with fusion reactors". (A runtime lock would also work, but a per-prototype lock should be easier/faster?)

[Bilka]

I added a "locked" property to the equipment grid prototype for 0.17.

[eradicator]

Wohoo! Thanks.