JIT costing #193
Description
On evaluation every IR node should add their costs to CostAccumulator. Check out direct-tree-eval branch in sigmastate.
Check out DataValueComparer in sigmastate for equality op costing - https://github.com/ScorexFoundation/sigmastate-interpreter/blob/60793c1c255233da651481516d9d3c977e5f5992/sigmastate/src/main/scala/sigmastate/DataValueComparer.scala#L12-L97