implement group member management

ldap_frontend/templates/groups/members.html

@@ -24,4 +24,23 @@
 {% endfor %}
                 </tbody>
             </table>
+            <form action="{{ url_for("group_edit", ou=ou) }}" method="post" class="row g-3 needs-validation">
+                <fieldset>
+                    <legend>add user to group</legend>
+
+                    <div class="row mb-3">
+                        <label for="add" class="form-label col-sm-2">user</label>
+                        <div class="col-sm-10">
+                            <select name="add" id="add" class="form-select">
+                                <option value="" selected>select user ...</option>
+{% for user in other_users|sort %}
+                                <option value="{{ user["uid"] }}">{{ user["cn"] }} ({{ user["uid"] }})</option>
+{% endfor %}
+                            </select>
+                        </div>
+                    </div>
+
+                    <input type="submit" value="add user" class="btn btn-primary mb-3"><br>
+                </fieldset>
+            </form>
 {% endblock %}