Allow combat robot capsules in roboport

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I'd like roboports to be able to deploy combat robot capsules placed inside them (or capsules in general)

Something of that nature already exists: https://mods.factorio.com/mod/combat-roboports
but personally I'm not really happy with how the roboport is a reskinned turrent and the capsules are actually ammo

What I would like to see is allowing roboport prototypes to either:
1. configure what items are allowed in the "robots" slots
2. add a generic inventory to the roboport for scripts to manipulate

We can then use hidden entities and scripts to deploy them, but these changes would allow better UX than the mentioned mod.