8e74da4622
This PR adds the ability for editor blocks to replace lines of text, but does not yet use that feature anywhere. We'll update assistant patches to use replace blocks on another branch: https://github.com/zed-industries/zed/tree/assistant-patch-replace-blocks Release Notes: - N/A --------- Co-authored-by: Antonio Scandurra <me@as-cii.com> Co-authored-by: Richard Feldman <richard@zed.dev> Co-authored-by: Marshall Bowers <marshall@zed.dev> Co-authored-by: Nathan Sobo <nathan@zed.dev>