Restructure project and fix JavaDoc generation

cloud-bukkit/src/main/java/com/intellectualsites/commands/BukkitPlayerSender.java

@@ -1,46 +0,0 @@
-//
-// MIT License
-//
-// Copyright (c) 2020 Alexander Söderberg
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-//
-// The above copyright notice and this permission notice shall be included in all
-// copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-// SOFTWARE.
-//
-package com.intellectualsites.commands;
-
-import org.bukkit.entity.Player;
-
-import javax.annotation.Nonnull;
-
-final class BukkitPlayerSender extends BukkitCommandSender {
-
-    BukkitPlayerSender(@Nonnull final Player player) {
-        super(player);
-    }
-
-    @Override
-    public boolean isPlayer() {
-        return true;
-    }
-
-    @Nonnull
-    @Override
-    public Player asPlayer() {
-        return (Player) this.getInternalSender();
-    }
-}