Cobblemon Raid Dens

- Changed Raid Features to a server-sided registry, allowing custom mods to add their own mechanics. - Added compatibility with Cobblemon Shadowed Hearts with a new `shadow` raid feature. - Added the ability to manually set the opacity of raid beams in the client config. Not supported with the legacy beacon beams. - Added the ability to set whether players can retry a failed raid in the common config. - Added a `no_ai` field to raid bosses to toggle its AI. - Relaxed requirements for the `/crd spawnboss` command, allowing console and command blocks to use the command without specifying a dimension. - Fixed issue with NeoForge version when Mega Showdown is not installed. - Fixed issue with raid bucket 'include' filters not working properly. - Fixed compatibility issue with NeoDaycare. - Fixed issues related to leaving and joining raids under specific conditions.