fix: update swagger base url with siteUrl and provide an option for custom url

Signed-off-by: Pranav C <pranavxc@gmail.com>

packages/nocodb/src/lib/noco/meta/api/swagger/swaggerApis.ts

@@ -15,6 +15,22 @@ async function swaggerJson(req, res) {
   });
 
   const swagger = await getSwaggerJSON(project, models);
+
+  swagger.servers = [
+    {
+      url: req.ncSiteUrl
+    },
+    {
+      url: '{customUrl}',
+      variables: {
+        customUrl: {
+          default: req.ncSiteUrl,
+          description: 'Provide custom nocodb app base url'
+        }
+      }
+    }
+  ] as any;
+
   res.json(swagger);
 }