Fix "java.lang.UnsupportedOperationException: null"

Introducing fine-grained control over which players can see all plugins:

• Operator Control:
  • operator_can_see_everything: When true, server operators can see all plugins regardless of hide/show settings
    
• Whitelist/Blacklist System:
  • whitelisted_uuids: Players who can see all plugins, even when not operators or when operator_can_see_everything is false
  • blacklisted_uuids: Players who are treated as normal users and can't see hidden plugins, even when they're operators and operator_can_see_everything is true

This system gives you precise control over who can see what, regardless of their operator status.

Better version check

Fix when something in the config hasn't been provided, or is null

Refresh the config when reloading so the new options get injected.

A fix for displaying multiple plugin types (like paper & bukkit)

* An op could see everything unfiltered. Unless the op is explicitly mentioned in `uuids_to_explicitly_disallow`. (or `operator_can_see_everything` is false).
* By default `minecraft:*` & `bukkit:*` will be shown to everyone. Unless explicitly mentioned inside the `hide_plugins` section.

Cache wasn't cleared on reload.

Update for minecraft v1.20.5+

First release