view .arcconfig @ 51851:0dbf6a5ccf5f

rust-config: add more ways of reading the config

These will be needed for future patches of this series to interpret more
complex/different config values.

{
    "conduit_uri": "https://phab.mercurial-scm.org/api",
    "phabricator.uri": "https://phab.mercurial-scm.org/",
    "repository.callsign": "HG",
    "arc.land.onto.default": "@",
    "base": "hg:.^"
}