Implement a basic API client

[barrucadu]

thing-doer API client

Usage: apiclient [OPTIONS] <COMMAND>

Commands:
  run           Run a single-container pod, like `podman run`.  Prints the name of the pod to stdout
  apply         Create a resource, if it does not already exist, or patch it, if it does
  list          List matching resources
  get           Get a single resource
  delete        Delete a single resource.  If this is a running pod, it is killed
  aliases       List all DNS aliases from a given source name
  create-alias  Create a DNS alias
  delete-alias  Delete a DNS alias
  gen-name      Generate a random name
  help          Print this message or the help of the given subcommand(s)

Options:
      --apid-url <APID_URL>  Address of the API server [default: http://127.0.0.1/]
  -h, --help                 Print help

This replaces the ad-hoc collection of testing tools with something that more closely matches the API, with a couple of helpers: a run to quickly create a single-container pod without needing to provide json, and an apply to create or patch a resource.