user requested feature, unordered commands with arguments can (less efficiently) work without the argument names

`/rtp [player] [region]` teleports player to region
`/rtp [region] [player]` also teleports player to region

I don't see much benefit from this, but it wasn't hard to implement based on what I already had so far.

if an input is not a subcommand, attempts to resolve the text against available parameters under the current command, sorting by integer priority (all 0 atm).

I did not apply this to tabcompletion (yet), because there would be too many options before typing