Feat: support NetBox 4.7.x

Raises max_version to 4.7.99 after confirming the plugin uses no APIs
removed in 4.7 (RelatedLinkColumn, registry['models']).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

netbox_site_prefix/__init__.py

@@ -6,9 +6,9 @@ class SitePrefixConfig(PluginConfig):
     verbose_name = "NetBox Site Prefix"
     author = "LKE"
     description = "Shows the first word of the site name in device and rack tables."
-    version = "1.0.0"
+    version = "1.0.1"
     min_version = "4.6.5"
-    max_version = "4.6.99"
+    max_version = "4.7.99"
 
     def ready(self):
         super().ready()