feat(tvix/repl): Add a command to recursively print HEAD r/8191 canon

Add a command, :p, to evaluate an expression and recursively print the
result, as if `--strict` had been passed on the command line.

Demonstration of this working:

    ❯ cargo r --bin tvix
        Finished dev [unoptimized + debuginfo] target(s) in 0.27s
        Running `target/debug/tvix`
    tvix-repl> { x = (x: x) 1; }
    => { x = <CODE>; } :: set
    tvix-repl> :p { x = (x: x) 1; }
    => { x = 1; } :: set

Change-Id: I1a81d7481160c30d2a4483c6308e25fa45f2dfdf
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11738
Autosubmit: aspen <root@gws.fyi>
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>

0 files changed, 0 insertions, 0 deletions