Conditions for drinking/contexts

[TomLewis]

Add conditions for if the brew can be drunk, please see how I use it to check for if PvP tagged here #22

• Add a worldguard flag to prevent use in certain regions
• Add condition for if in worldguard region, another way to do it, but global
• Condition to check if tagged in combat via PvP manager and cancel drinking if so
• This gives options for infinite checks for infinite plugins, especially if placeholder API is used, so then you can check agaist any placehoder API for any plugin without having to add direct access to that plugin

If %placeholder% == "yes" deny drinking.

If you want to get some ideas for conditions/rules see ChatControl reds wiki https://github.com/kangarko/ChatControl-Red/wiki/Rules

[Jsinco]

Working on this with Depenizen DenizenScript/Depenizen#430 support. I'll get back to this once we've handled #56