feat(Core): replace ACE network with Boost.Asio (#6574)

src/server/worldserver/worldserver.conf.dist

@@ -197,6 +197,19 @@ SourceDirectory = ""
 
 MySQLExecutable = ""
 
+#
+#    ThreadPool
+#        Description: Number of threads to be used for the global thread pool
+#                     The thread pool is currently used for:
+#                      - Signal handling
+#                      - Remote access
+#                      - Database keep-alive ping
+#                      - Core freeze check
+#                      - World socket networking
+#        Default:     2
+
+ThreadPool = 2
+
 #
 #    IPLocationFile
 #        Description: The path to your IP2Location database CSV file.