Added beginning for possible donorrank command

velocity/src/main/java/com/alttd/vboosters/commands/DonorRankCommand.java

@@ -0,0 +1,38 @@
+package com.alttd.vboosters.commands;
+
+import com.mojang.brigadier.builder.LiteralArgumentBuilder;
+import com.mojang.brigadier.tree.LiteralCommandNode;
+import com.velocitypowered.api.command.BrigadierCommand;
+import com.velocitypowered.api.command.CommandMeta;
+import com.velocitypowered.api.command.CommandSource;
+import com.velocitypowered.api.proxy.ProxyServer;
+
+public class DonorRankCommand {
+
+    public DonorRankCommand(ProxyServer proxyServer) {
+        LiteralCommandNode<CommandSource> command = LiteralArgumentBuilder
+                .<CommandSource>literal("donorrank")
+                .requires(ctx -> ctx.hasPermission("command.proxy.donorrank"))
+                .executes(context -> {
+                    //TODO command format: /donorrank user promote rank donate_id
+                    //TODO store the command and before and after rank in a file
+                    //TODO remove old donor ranks and add the new one
+
+                    //TODO command format: /donorrank user promote rank donate_id
+                    //TODO get command and before and after rank from a file
+                    //TODO remove the command and before and after rank from a file
+                    //TODO remove current donor ranks and add the old one back (or remove them all if there was no old one)
+//                    VelocityBoosters.getPlugin().getLogger().info(stuff);
+                    return 1;
+                })
+                .build();
+
+        BrigadierCommand brigadierCommand = new BrigadierCommand(command);
+
+        CommandMeta.Builder metaBuilder = proxyServer.getCommandManager().metaBuilder(brigadierCommand);
+
+        CommandMeta meta = metaBuilder.build();
+
+        proxyServer.getCommandManager().register(meta, brigadierCommand);
+    }
+}