GH-184 Refactor Knockback Mechanic and Add Support for Deny Entry flag

[CitralFlo]

Added features:

• block of entry to regions with PVP flag from WorldGuard Rework:
• Knockback multiplayer
• Knockback direction

[CitralFlo]

To be honest many features require delay to messages. Thus delay in my opinion should be added to multification, which we plan to add to EternalCombat

[CitralFlo]

Mend security detects Guava as always