Add cli commands for users and groups (#1993)

Adds cli commands to manage users and groups.

Co-authored-by: Matthias Thieroff <matthias.thieroff@cloudogu.com>

scm-webapp/src/main/java/sonia/scm/user/cli/UserCommandBeanMapper.java

@@ -0,0 +1,45 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2020-present Cloudogu GmbH and Contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package sonia.scm.user.cli;
+
+import org.mapstruct.Mapper;
+import sonia.scm.user.User;
+
+import java.time.Instant;
+import java.time.format.DateTimeFormatter;
+
+@Mapper
+interface UserCommandBeanMapper {
+
+  UserCommandBean map(User modelObject);
+
+  default String mapTimestampToISODate(Long timestamp) {
+    if (timestamp != null) {
+      return DateTimeFormatter.ISO_INSTANT.format(Instant.ofEpochMilli(timestamp));
+    }
+    return null;
+  }
+
+}