Pre-allocation syntax of tables

The Lua of the game supports pre-allocation syntax when you create a new table: `{&1&1}` where `1` can be any number. The numbers allow us to define the second and third argument of the `NEWTABLE` operation. For more information:
- https://www.lua.org/source/5.1/lopcodes.h.html

Previously no file with that syntax was part of the repository. But the `lazyvar.lua` file uses it: https://github.com/FAForever/fa/pull/3725 . It is also an interesting approach to get a 20% - 50% speed up on table allocations, according to benchmarks.

This compiler doesn't need to support the functionality. But it would be great if it would accept the syntax 😄 .