Server-Expansion

Adds server-related placeholders.
Read the placeholder-page for a list of placeholders.

Changes

• Add some placeholders for per world counts
• Folia support transferred to a new expansion, please see Folia-Expansion.

Placeholders

Per world counts

%server_total_chunks_<world>%
%server_total_players_<world>%
%server_total_entities_<world>%
%server_total_living_entities_<world>%
%server_total_tile_entities_<world>%
%server_total_tick_tile_entities_<world>%