Add BauSystem module

Fix ci java version
Fix LinkageProcessor

BauSystem/BauSystem_Main/src/de/steamwar/bausystem/shared/Pair.java

@@ -0,0 +1,56 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2021  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.bausystem.shared;
+
+import lombok.EqualsAndHashCode;
+import lombok.Getter;
+
+
+@Getter
+@EqualsAndHashCode
+public class Pair<K, V> {
+
+	private K key;
+
+	private V value;
+
+
+	public Pair(final K key, final V value) {
+		this.key = key;
+		this.value = value;
+	}
+
+	public K setKey(final K key) {
+		final K currentKey = this.key;
+		this.key = key;
+		return currentKey;
+	}
+
+	public V setValue(final V value) {
+		final V currentValue = this.value;
+		this.value = value;
+		return currentValue;
+	}
+
+	@Override
+	public String toString() {
+		return this.key + "=" + this.value;
+	}
+}