Feat: Added a Statistics node

Author: mzabuawala

web/pgadmin/browser/server_groups/servers/databases/schemas/__init__.py

@@ -157,6 +157,9 @@ def register(self, app, options):
         from .sequences import blueprint as module
         self.submodules.append(module)
 
+        from .statistics import blueprint as module
+        self.submodules.append(module)
+
         from .synonyms import blueprint as module
         self.submodules.append(module)