usermanager: Add create_user_with_role() method to atomically set initial role

mod_http_file_share: Set slot token TTL so util.jwt validates expiry Overrides the util.jwt default of 1h with the intended TTL of 10 minutes. Because util.jwt now has its own expiry checks, so the 'expiry' field is no longer used and can thus be removed.

prosodyctl: Add experimental way to reload specific modules directly Mostly thinking out loud about how various actions may use the shell This enables the following sequence of commands: prosodyctl install mod_example prosodyctl reload mod_example which is simpler than prosodyctl shell module reload example

net.server: Handle loading from outside Prosody (e.g. Verse) server_select only depending on LuaSocket generally makes it more portable, so fall back to that if util.poll can't be found.

renamening: Fix newly added imports to use the new namespace

util.jsonschema: Remove wrapper function This was to silence some Teal warning that seems to have gone away.

util.jsonschema: Silence Teal warnings about utf8 library Teal worries that we redefine the global. Also that the fallback was missing type information.

util.jsonschema: Silence Teal warnings about counting items in tables Teal thinks that these are key-value maps which are always of length zero, but that is not the case.

mod_invites: Refactor argument handling using util.argparse This makes it so that --admin and --role are no longer mutually exclusive, they the former is simply treated as another --role. This was likely a leftover from when only a single role was possible. It does however become unclear which should be the primary, since the order is not preserved by argparse. Bonus: Loading of modules is avoided with only the --help is shown.

util.argparse: Add support for repeatable parameters These are gathered into arrays