feat: add .compile argument to crate function

[sebffischer]

R disables jit-compilation of functions when changing their environment.

Resolves Issue #94

• [x] if byte code compiled function should go in it should always be compiled
• [x] Why does this happen?
• https://github.com/wch/r-source/blob/94a6ef1b189379c10c9e651d83a098c78ecd6a76/src/main/builtin.c#L324