Add new VSL app with initial models and admin configuration.

Created VslDest model with fields for ID, name, creation date, and update date.
Added VslConfig to settings.py.
Configured admin interface for VslDest.
Initialized migrations for VslDest model.
Included basic test and view files for future development.

vsl/admin.py

@@ -0,0 +1,11 @@
+from django.contrib import admin
+from vsl.models import VslDest
+
+
+@admin.register(VslDest)
+class vsl_destAdmin(admin.ModelAdmin):
+    list_display = ('id', 'name')
+
+    ordering = ('id',)
+    list_per_page = 100
+    search_fields = ('name',)