vim snippet cpp: Added Doxygen snippet

vim/.vim/snippets/cpp.snippets

@@ -30,3 +30,13 @@ snippet cl
 	};
 snippet todo
 	// TODO: $1
+# Doxygen
+snippet /**
+	/** ${1:brief description}
+	 *
+	 * ${2:long description}
+	 * 
+	 * @tparam ${3:template parameter}
+	 * @param ${4:parameter}
+	 * @return ${5:return value}
+	 */