Create an "enum to luanumber" macro to guard against float imprecision

Lua numbers in recoil are float32s, which can fully represent only up to 2^24. For numbers larger than 2^24, they will suffer from rounding issues.

In the event that values are larger than 2^24, we want to loudly let the developer know, so they can do more creative casting as needed. I assume some sort of compile time warning and/or assert would be appropriate. I imagine this should be a macro.

The issue names no files or tests. Start by locating Recoil's Lua-number conversion sites and existing numeric-check or assertion macros, then determine where an enum-to-luanumber macro belongs. Done means values above 2^24 trigger a clear compile-time warning or assertion while allowing intentional casts to be handled explicitly.

Written by the indexing model from the issue text.