Support server version flag passed down the pipe, rather than hardcoded

[github-actions]

This is a placeholder for now, should be set by the server on startup. But right now

there isn't a good place to stash this other than WorldState. I intend on refactoring the

signature for BF invocations, and when I do this, I'll get additional metadata on there.

moor/crates/kernel/src/builtins/bf_server.rs

Line 356 in 47435a1

// TODO: Support server version flag passed down the pipe, rather than hardcoded

    if !bf_args.args.is_empty() {
        return Err(E_INVARG);
    }
    // TODO: Support server version flag passed down the pipe, rather than hardcoded
    //   This is a placeholder for now, should be set by the server on startup. But right now
    //   there isn't a good place to stash this other than WorldState. I intend on refactoring the
    //   signature for BF invocations, and when I do this, I'll get additional metadata on there.