Add basic nations functionality

pom.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xmlns="http://maven.apache.org/POM/4.0.0"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
@@ -23,8 +23,8 @@
                 <artifactId>maven-compiler-plugin</artifactId>
                 <version>3.8.1</version>
                 <configuration>
-                    <source>${java.version}</source>
-                    <target>${java.version}</target>
+                    <source>16</source>
+                    <target>16</target>
                 </configuration>
             </plugin>
             <plugin>

src/main/java/pro/cloudnode/smp/nations/Nations.java

@@ -1,20 +1,69 @@
 package pro.cloudnode.smp.nations;
 
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.minimessage.MiniMessage;
 import org.bukkit.plugin.java.JavaPlugin;
 import pro.cloudnode.smp.nations.commands.NationsCommand;
+import pro.cloudnode.smp.nations.listeners.ChatMessageListener;
+import pro.cloudnode.smp.nations.listeners.PlayerConnectionListener;
+import pro.cloudnode.smp.nations.locale.Messages;
+import pro.cloudnode.smp.nations.util.NationManager;
 
 import java.util.Objects;
 
 public final class Nations extends JavaPlugin {
 
+    public static NationManager nationManager;
+
+    public static NationManager getNationManager() {
+        return nationManager;
+    }
+
+    /**
+     * Translate a message to a component and replace placeholders
+     *
+     * @param message the message to translate
+     * @param args    the arguments to replace placeholders with
+     * @return the translated component
+     */
+    public static Component t(Messages message, Object... args) {
+        return MiniMessage.miniMessage().deserialize(message.replacePlaceholders(args));
+    }
+
+    /**
+     * Translate a message to a string and replace placeholders
+     *
+     * @param message the message to translate
+     * @param args    the arguments to replace placeholders with
+     * @return the translated string
+     */
+    public static String ts(Messages message, Object... args) {
+        return message.replacePlaceholders(args);
+    }
+
     @Override
     public void onEnable() {
+        // save  messages.yml if it doesn't exist
+        Messages.save();
+        Messages.addMissingDefaults();
+        Messages.load();
+
+        // load nations
+        nationManager = new NationManager(this);
+        nationManager.load();
+
+        // register commands
         Objects.requireNonNull(this.getCommand("nations")).setExecutor(new NationsCommand(this));
         Objects.requireNonNull(this.getCommand("nations")).setTabCompleter(new NationsCommand(this));
+
+        // register chat listener
+        getServer().getPluginManager().registerEvents(new ChatMessageListener(), this);
+        getServer().getPluginManager().registerEvents(new PlayerConnectionListener(), this);
+
     }
 
     @Override
     public void onDisable() {
-
+        nationManager.save();
     }
 }