Change filters to use $params as array

[MGatner]

Current implementation expects a single string from $params but is actually being passed an array from CI4's Filters->enableFilter:

list($name, $params) = explode(':', $name);

$params = explode(',', $params);
array_walk($params, function (&$item) {
	$item = trim($item);
});

$this->arguments[$name] = $params;

This PR changes the two parameter-accepting filters to use $params as an array.

NOTE: Current implementation requires all permissions/roles to be fulfilled. Might consider these as any at some point, or additional filters so user may choose.