feat: Implement user management functionality with impersonation support

.vscode/ftp-kr.sync.cache.json

@@ -13,7 +13,36 @@
         "lmtime": 0,
         "modified": true
       },
-      "autoload": {},
+      "autoload": {
+        "Domain": {
+          "Tasks": {
+            "class.WorkTimeRepository.php": {
+              "type": "-",
+              "size": 3269,
+              "lmtime": 0,
+              "modified": false
+            },
+            "MailToTaskImporter.php": {
+              "type": "-",
+              "size": 24511,
+              "lmtime": 1770587036920,
+              "modified": false
+            },
+            "TaskAttachmentRepository.php": {
+              "type": "-",
+              "size": 8411,
+              "lmtime": 0,
+              "modified": false
+            },
+            "WorkTimeRepository.php": {
+              "type": "-",
+              "size": 3269,
+              "lmtime": 0,
+              "modified": false
+            }
+          }
+        }
+      },
       "ceidg.php": {
         "type": "-",
         "size": 3950,
@@ -30,8 +59,8 @@
       },
       "config.php": {
         "type": "-",
-        "size": 729,
-        "lmtime": 1770583610342,
+        "size": 1249,
+        "lmtime": 1770587027872,
         "modified": false
       },
       "cron.php": {