Support use of multiple of the same commands in LocalClient.run()'s compound mode

[hvt]

I'm using the compound command mode of LocalClient.cmd like this:

import salt.client

local = salt.client.LocalClient()
local.cmd(
    '*',
    [
        'grains.items',
        'cmd.run',
    ],
    [
        [],
        ['uptime'],
    ]
)

Now, if I want to issue another cmd.run (or any other Salt module / function multiple times for that matter), it seems this is not possible with the current API. Mainly because the result of LocalClient.cmd() (when using compound command mode) is keyed by the module's function name. Although this can be seen as handy, it does conflict with the LocalClient.cmd() definition of using indexes to correlate the fun and arg parameters imo.

Support for this use-case without a BC-breaking change does not seem possible, so perhaps a new cmd_compound() can be introduced, with this definition:

def cmd_compound(tgt, funs_args: list[tuple[str, list[str]]], timeout=None, tgt_type='glob', ret='', jid='', full_return=False, kwarg=None, **kwargs)

Where funs_args (name is up for debate 😂 ) is a list of tuple, where the first tuple's element is the fun and the second tuple's element is the list of arguments.

WDYT?