CHIA-1226 Include the cost of the whole spend in get_conditions_from_spendbundle's return value

[AmineKhaldi]

The generator doesn't just include the puzzle reveal and the solution, it also includes the coin that's being spent, specifically in the form of (parent_id, puzzle_hash, amount). Each spend will necessarily have to pay that size-cost.

[Rigidity]

The benefit of subtracting the cost incrementally as you go is to exit early if the spend exceeds the limit, before processing the actual CLVM and conditions, or other spends. I think doing it afterward could open up a DoS attack vector

[coveralls-official]

Pull Request Test Coverage Report for Build 10630724752

Details

• 34 of 34 (100.0%) changed or added relevant lines in 2 files are covered.
• 3 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+0.01%) to 83.907%

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Files with Coverage Reduction	New Missed Lines	%
crates/chia-protocol/src/program.rs	3	72.75%

Totals
Change from base Build 10618872395:	0.01%
Covered Lines:	12326
Relevant Lines:	14690

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💛 - Coveralls