schema update in database analyser

plugins/dbgate-plugin-postgres/src/backend/sql/getSchemas.js

@@ -0,0 +1 @@
+module.exports = `select oid as "object_id", nspname as "schema_name" from pg_catalog.pg_namespace`;

plugins/dbgate-plugin-postgres/src/backend/sql/index.js

@@ -12,6 +12,7 @@ const matviewColumns = require('./matviewColumns');
 const indexes = require('./indexes');
 const indexcols = require('./indexcols');
 const uniqueNames = require('./uniqueNames');
+const getSchemas = require('./getSchemas');
 const geometryColumns = require('./geometryColumns');
 const geographyColumns = require('./geographyColumns');
 
@@ -39,4 +40,5 @@ module.exports = {
   uniqueNames,
   geometryColumns,
   geographyColumns,
+  getSchemas,
 };