New argument layout

[sverhoeven]

xenon
  --dry-run
  --format cwljson
  [--certfile ...]
  [--password ...]
  [--username ...]
            slurm
                [--location hostname]
                [--props KEY=VALUE]
                    exec <executable> <args> <environment> <job options> <max time> <queue> <working directory> <std* attached to local streams>
                    submit <executable> <args> <environment> <job options> <max time> <queue> <working directory> <std* just filename>
                    list [--queue gpu] [--id 1234]
                    remove 1234
                    queues [--default]
            ssh
                --location hostname
                [--props KEY=VALUE]
                    exec <executable> <args> <environment> <job options> <max time> <queue> <working directory> <std*?? attached to local streams>
            sftp 
                --location hostname
                [--props KEY=VALUE]
                    copy [--recursive] [--ignore-existing] [--overwrite] <src-path> <dst-location> <dst-path> [--dst-certfile ...] [--dst-sername ...] [--dst-password ...]
                    upload [--recursive] [--ignore-existing] [--overwrite] <src-path> <dst-path>
                    download [--recursive] [--ignore-existing] [--overwrite] <src-path> <dst-path>
                    remove <path>
                    list [--recursive] <path>
            local
                [--location drive??]
                [--props KEY=VALUE]
                    exec <executable> <args> <environment> <job options> <max time> <queue> <working directory> <std*?? attached to local streams>
            file 
                [--location drive??]
                    copy [--recursive] [--ignore-existing] [--overwrite] <src-path> <dst-path>
                    remove <path>
                    list [--recursive] <path>
            webdav 
                --location hostname
                [--props KEY=VALUE]
                    copy [--recursive] [--ignore-existing] [--overwrite] <src-path> <dst-location> <dst-path> [--dst-certfile ...] [--dst-sername ...] [--dst-password ...]
                    upload [--recursive] [--ignore-existing] [--overwrite] <src-path> <dst-path>
                    download [--recursive] [--ignore-existing] [--overwrite] <src-path> <dst-path>
                    remove <path>
                    list [--recursive] <path>

The copy subcommand is for copying between 2 remote systems.
The exec subcommand waits for job to complete, the submit subcommand does not.

Local paths can be absolute or relative to working directory.

[sverhoeven]

std* for exec attach to local stream.

For submit use filenames that are read/written to/from the --location in the working directory or if working directory is not set most likely ~/.

[sverhoeven]

Rename download/upload commands to get/put resp.?

The local target file in download command should be pipeable to stdout using - as argument.
The local source file in upload command shoulbe be pipeable from stdin using - as argument.

[sverhoeven]

Most code completed, created issues (#2 and #3) for uncompleted items.