Turn list argument into repeatable flag

[iwilltry42]

Example argument:

args: {
  extra_food: ["hazelnut", "walnut"]
}

Expected usage:

acorn run . --extra-food foo --extra-food bar

Right now, all variants that I tried to pass in some sort of list (e.g. the one above, comma-separated, etc.) end up with an error similar to the one below:

acorn render . --extra-food foo --extra-food bar
Error: args.extra_food: 2 errors in empty disjunction:
args.extra_food: conflicting values "bar" and ["hazelnut","walnut"] (mismatched types string and list):
    /_internal_/args.cue:1:23
    Acornfile:2:15
args.extra_food: conflicting values "bar" and [...string] (mismatched types string and list):
    /_internal_/args.cue:1:23
    Acornfile:2:15

[cjellick]

not going to try to squeeze this into v0.4.1. bumping out to v0.5

[cjellick]

Wonder if we can revisit this and get it out in v0.6.0. If you have a PR, it probably needs rebased pretty badly 😅

[cjellick]

This is low priority, much lower than the signing and attestation, but I'm bringing it up in case you need/want a change of base occasionally while working on that feature.