Fix + Cleanup + Don't do useless action + Improvement

[iamnoksio]

• Implement [FlamePaper-0003] Fix chunk memory leak
• Remove unused variable
• Fix commands memory leak
• Proper 0088 book exploit patch
• Don't do useless action
• Pull Handle player login thread in pool PaperMC/Paper-1.7#48
• Pull https://github.com/PaperMC/Paper/blob/ver/1.12.2/Spigot-Server-Patches/0367-Fix-server-icon-encoding-to-show-properly-on-1.13-cl.patch
• Optimize World::rayTrace
• Modernize CraftChunk
• Removed ByteBuf from the loading of the server icon
• Improved RollingAverage for TPS stability
• PacketPlayInTabComplete from PlayerConnection improvement
• Pull https://github.com/moom0o/Papaya/blob/77cce8236ff09d52730b66c7a146265ce3415185/Spigot-Server-Patches/0284-Make-legacy-ping-handler-more-reliable.patch
• Improved IntCache
• Add Player#sendActionBar from higher version for more 1.8 interaction
• Update dependencies and add GH actions
• sync MetadataStoreBase & PermissibleBase