Adjust cargo drop to allow server owners to specify as many 'hull' drop commodities as they like on player death.

[IrateRedKite]

• Have changed the hullDrop1NickNameId and hullDrop2NickNameId fields to a single playerOnDeathCargo that can be populated with multiple commodities
• Drop quantities are now calculated as fMass * hullDropFactor rather than remainingHoldSize * hullDropFactor * 0.5. This seems like a more sensible approach to take to hull drops, and I intend to expand upon this in the future.

[sonarcloud[bot]]

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