feat: add typed table access with PostgrestTable and TableColumn

packages/postgrest/lib/postgrest.dart

@@ -3,5 +3,6 @@ library;
 
 export 'src/postgrest.dart';
 export 'src/postgrest_builder.dart';
+export 'src/postgrest_typed_builder.dart';
 export 'src/types.dart';
 export 'package:http/http.dart' show RequestAbortedException;

packages/postgrest/lib/src/postgrest.dart

@@ -114,6 +114,23 @@ class PostgrestClient {
     );
   }
 
+  /// Perform a typed table operation.
+  ///
+  /// Unlike [from], results are converted into the row type of [table]
+  /// instead of raw `Map<String, dynamic>` data, and filters are built from
+  /// [TableColumn]s, which makes them compile-time checked.
+  ///
+  /// ```dart
+  /// final List<Book> books = await client
+  ///     .table(Books.table)
+  ///     .select()
+  ///     .where(Books.id.gt(10));
+  /// ```
+  @experimental
+  PostgrestTypedQueryBuilder<Row> table<Row>(PostgrestTable<Row> table) {
+    return PostgrestTypedQueryBuilder(from(table.name), table);
+  }
+
   /// Select a schema to query or perform an function (rpc) call.
   ///
   /// The schema needs to be on the list of exposed schemas inside Supabase.