Use @LinkedTimer for the timers of linked classes

The repeating timers that linked classes and the plugin main classes started
once for the whole runtime now use @LinkedTimer, on Spigot (BauSystem,
SpigotCore, LobbySystem, MissileWars, TowerRun, Teamserver) and Velocity.
The FightInfoPacketSenders of MissileWars and TowerRun are linked themselves
instead of being started by the main class.

MissileWars/src/de/steamwar/misslewars/FightInfoPacketSender.java

@@ -19,6 +19,8 @@
 
 package de.steamwar.misslewars;
 
+import de.steamwar.linkage.Linked;
+import de.steamwar.linkage.LinkedTimer;
 import de.steamwar.network.NetworkSender;
 import de.steamwar.network.packets.common.FightInfoPacket;
 import de.steamwar.sql.SteamwarUser;
@@ -28,6 +30,7 @@ import org.bukkit.World;
 import java.util.List;
 import java.util.stream.Collectors;
 
+@Linked
 public class FightInfoPacketSender implements Runnable {
 
     private final World world = Bukkit.getWorlds().get(0);
@@ -41,6 +44,7 @@ public class FightInfoPacketSender implements Runnable {
     private final int redLeader = Config.RedLeader != null ? SteamwarUser.get(Config.RedLeader).getId() : 0;
 
     @Override
+    @LinkedTimer(delay = 1, period = 1, unit = LinkedTimer.Unit.SECONDS)
     public void run() {
         if (Config.test()) {
             return;

MissileWars/src/de/steamwar/misslewars/MissileWars.java

@@ -75,8 +75,6 @@ public class MissileWars extends JavaPlugin {
 
         StateDependent.setupState(fightState);
 
-        Bukkit.getScheduler().runTaskTimer(this, new FightInfoPacketSender(), 20, 20);
-
         Bukkit.getWorlds().forEach(world -> {
             world.setGameRule(GameRule.KEEP_INVENTORY, true);
             world.setGameRule(GameRule.MOB_GRIEFING, true);