add guild databasing and caching + guild creation and information cmds

src/main/java/dev/plex/command/sub/CreateSubCommand.java

@@ -0,0 +1,43 @@
+package dev.plex.command.sub;
+
+import dev.plex.Guilds;
+import dev.plex.command.PlexCommand;
+import dev.plex.command.annotation.CommandParameters;
+import dev.plex.command.annotation.CommandPermissions;
+import dev.plex.command.source.RequiredCommandSource;
+import dev.plex.guild.Guild;
+import dev.plex.rank.enums.Rank;
+import net.kyori.adventure.text.Component;
+import org.apache.commons.lang.StringUtils;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+@CommandParameters(name = "create", aliases = "make", usage = "/guild <command> <name>")
+@CommandPermissions(level = Rank.OP, source = RequiredCommandSource.IN_GAME, permission = "plex.guilds.create")
+public class CreateSubCommand extends PlexCommand
+{
+    public CreateSubCommand()
+    {
+        super(false);
+    }
+    @Override
+    protected Component execute(@NotNull CommandSender commandSender, @Nullable Player player, @NotNull String[] args)
+    {
+        if (args.length == 0)
+        {
+            return usage();
+        }
+        assert player != null;
+        if (Guilds.get().getGuildHolder().getGuild(player.getUniqueId()).isPresent())
+        {
+            return messageComponent("alreadyInGuild");
+        }
+        Guilds.get().getSqlGuildManager().insertGuild(Guild.create(player, StringUtils.join(args, " "))).whenComplete((guild, throwable) -> {
+            Guilds.get().getGuildHolder().addGuild(guild);
+            send(player, mmString("Created guild named " + guild.getName()));
+        });
+        return null;
+    }
+}