🔌Plugins placeholders

All provided placeholders dependent on various plugins (still can be used in any events, actions and even outside of the ConditionalEvents).

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1. Placeholder for LuckPerms permissions with contexts – depends on the LuckPerms plugin;

2. Placeholder for real nickname in Essentials based on custom nickname – depends on the EssentialsX plugin;

3. Placeholder for different information about EssentialsX warps – depends on the EssentialsX plugin.

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