Implement food buffs

src/main/java/emu/grasscutter/game/props/ServerBuffType.java

@@ -0,0 +1,34 @@
+package emu.grasscutter.game.props;
+
+import java.util.stream.Stream;
+
+import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
+import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
+
+public enum ServerBuffType {
+    SERVER_BUFF_NONE (0),
+    SERVER_BUFF_AVATAR (1),
+    SERVER_BUFF_TEAM (2),
+    SERVER_BUFF_TOWER (3);
+	
+	private final int value;
+	private static final Int2ObjectMap<ServerBuffType> map = new Int2ObjectOpenHashMap<>();
+	
+	static {
+		Stream.of(values()).forEach(e -> {
+			map.put(e.getValue(), e);
+		});
+	}
+	
+	private ServerBuffType(int value) {
+		this.value = value;
+	}
+
+	public int getValue() {
+		return value;
+	}
+	
+	public static ServerBuffType getTypeByValue(int value) {
+		return map.getOrDefault(value, SERVER_BUFF_NONE);
+	}
+}