Investigate performance to get `const` time gas cost lookups

lazy_static alone may be insufficient, would require some investigation to find the exact solution. But agree that an issue would be a good way to resolve this for now.

_Originally posted by @Voxelot in https://github.com/FuelLabs/fuel-vm/pull/279#discussion_r1065222817_

Start by tracing the Fuel VM gas-cost lookup path and investigating whether the current lookup can be made constant-time. Compare viable approaches, including the noted lazy_static idea, and define done as a measured performance improvement with the chosen lookup behavior verified.

Written by the indexing model from the issue text.