Draft: Implement human grouping

Closes #34

source/armarx/navigation/human/ConvexHullGenerator.h

+/**
+ * This file is part of ArmarX.
+ *
+ * ArmarX is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * ArmarX 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * @author     Timo Weberruß ( timo dot weberruss at student dot kit dot edu )
+ * @date       2022
+ * @copyright  http://www.gnu.org/licenses/gpl-2.0.txt
+ *             GNU General Public License
+ */
+
+#pragma once
+
+#include "GroupShapeGenerator.h"
+#include <armarx/navigation/human/types.h>
+
+
+#pragma once
+
+namespace armarx::navigation::human
+{
+    /**
+     * @brief A GroupShapeGenerator that defines the group shape of a set of humans as the
+     * convex hull of their positions in 2D space.
+     */
+    class ConvexHullGenerator : public GroupShapeGenerator
+    {
+    public:
+        ConvexHullGenerator() = default;
+        virtual ~ConvexHullGenerator() = default;
+
+        shapes::Polygon createShape(const HumanGroup& group) const override;
+    };
+} // namespace armarx::navigation::human