feat: export additional schema builder classes (typeorm#4325)

Author: michaeldzjap

src/index.ts

@@ -108,9 +108,12 @@ export * from "./repository/TreeRepository";
 export * from "./repository/MongoRepository";
 export * from "./repository/RemoveOptions";
 export * from "./repository/SaveOptions";
+export * from "./schema-builder/table/TableCheck";
 export * from "./schema-builder/table/TableColumn";
+export * from "./schema-builder/table/TableExclusion";
 export * from "./schema-builder/table/TableForeignKey";
 export * from "./schema-builder/table/TableIndex";
+export * from "./schema-builder/table/TableUnique";
 export * from "./schema-builder/table/Table";
 export * from "./driver/mongodb/typings";
 export * from "./driver/types/DatabaseType";