Add ShopMessageConfig

src/main/java/com/alttd/playershops/config/ShopMessageConfig.java

@@ -0,0 +1,30 @@
+package com.alttd.playershops.config;
+
+public class ShopMessageConfig {
+
+    private final String shopType;
+    private final String configPath;
+    private final String defaultPath;
+
+    public ShopMessageConfig(String shopType) {
+        this.shopType = shopType;
+        this.configPath = "shop.text." + this.shopType + ".";
+        this.defaultPath = "shop.text.default.";
+        init();
+    }
+
+    public void init() {
+        Config.config.readConfig(ShopMessageConfig.class, this);
+    }
+
+    private static void set(String path, Object def) {
+        Config.config.set(path, def);
+    }
+
+    private String getString(String path, String def) {
+        set(defaultPath + path, def);
+        return Config.config.getNode(configPath + path).getString(
+                Config.config.getNode(defaultPath + path).getString(def));
+    }
+
+}