docs: describe different catalogues supported

Author: Alex

website/src/api.md

@@ -24,7 +24,21 @@
 * Create and list namespaces.
 * Create, load, and drop tables
 
-Currently only rest catalog has been implemented, and other catalogs are under active development. Here is an 
+There is support for the following catalogs:
+
+* `RestCatalog` - the Iceberg REST catalog
+
+* `Glue` - the AWS Glue Data Catalog
+
+* `HMS` - Apache Iceberg HiveMetaStore catalog
+
+* `S3Tables` - AWS S3 Tables
+
+* `SQL` - SQL-based catalog
+
+## `RestCatalog` 
+
+Here is an 
 example of how to create a `RestCatalog`:
 
 ```rust,no_run,noplayground