Closes #2062
* Support `add_columns`, `alter_columns`, `drop_columns` in Remote SDK and async Python * Add `data_type` parameter to node * Docs updates
This is done as setup for a PR that will fix the OpenAI dependency issue. * [x] FTS examples * [x] Setup mock openai * [x] Ran `npm audit fix` * [x] sentences embeddings test * [x] Double check formatting of docs examples