fix: move admin panel item to customDev section

Move Data Migration from system section to unified "Custom Development"
section shared by all custom extensions.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

files/custom/Espo/Modules/DataMigration/Resources/i18n/fa_IR/Admin.json

@@ -1,6 +1,7 @@
 {
     "labels": {
-        "Data Migration": "העברת נתונים"
+        "Data Migration": "העברת נתונים",
+        "Custom Development": "פיתוח עצמאי"
     },
     "descriptions": {
         "dataMigration": "ייצוא וייבוא נתוני תיקים בין מערכות EspoCRM"

files/custom/Espo/Modules/DataMigration/Resources/metadata/app/adminPanel.json

@@ -1,5 +1,6 @@
 {
-    "system": {
+    "customDev": {
+        "label": "Custom Development",
         "itemList": [
             "__APPEND__",
             {
@@ -8,8 +9,9 @@
                 "iconClass": "fas fa-exchange-alt",
                 "description": "dataMigration",
                 "view": "modules/data-migration/views/admin/data-migration",
-                "order": 85
+                "order": 50
             }
-        ]
+        ],
+        "order": 30
     }
 }