Let contract operations report direct gas charges as fees for mod-service record construction

[tinker-michaelj]

Problem

We need to include the direct gas charges assessed by contract operations (unchanged for mono-service compatibility) in the transactionFee field in mod-service.

Solution

Add a HandleContext#includeDirectFeePayment(long) method, and call it at the end of a contract operation's handle() once the net gas cost (upfront cost minus any refund) is known.

Alternatives

No response