Remove non-vanilla * from helper and denial systems

[jasonw4331]

Introduction

Recently it was pointed out to me that @a would be better to be used in place of the asterisk * because Vanilla bedrock edition uses the @a selector. I agree.

The plugin PlayerSelectors on poggit can be used to add the @a selector along with many other vanilla selectors. This PR removes the * implementation in a push for users to use the PlayerSelectors plugin instead.

Relevant issues

• N/A

Changes

API changes

• The asterisk * can no longer be used with Plot::isHelper() or Plot::isDenied()

Behavioral changes

• The addhelper subcommand can no longer use the asterisk * to open a plot to everyone
• The denyplayer subcommand can no longer use the asterisk * to block everyone from a plot

Backwards compatibility

• Upon updating, plots that had everyone blocked and plots that had everyone helping will no longer function as expected.

Follow-up

• All Following releases should advertise PlayerSelectors as a replacement for the feature.

Tests

The asterisk* no longer functions to allow or block all players.

[Thunder33345]

The addhelper subcommand can no longer use the asterisk * to open a plot to everyone
The denyplayer subcommand can no longer use the asterisk * to block everyone from a plot

what's a valid new replacement or an alternative for a wildcard allow/block?
assuming @a only applies to currently online players