Introduce multi-cursor inline transformations (#13368)

https://github.com/zed-industries/zed/assets/482957/591def34-e5c8-4402-9c6b-372cbca720c3

Release Notes:

- N/A

---------

Co-authored-by: Richard Feldman <oss@rtfeldman.com>

Cargo.lock

@@ -362,6 +362,7 @@ dependencies = [
  "anthropic",
  "anyhow",
  "assistant_slash_command",
+ "async-watch",
  "cargo_toml",
  "chrono",
  "client",
@@ -873,6 +874,15 @@ dependencies = [
  "tungstenite 0.16.0",
 ]
 
+[[package]]
+name = "async-watch"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a078faf4e27c0c6cc0efb20e5da59dcccc04968ebf2801d8e0b2195124cdcdb2"
+dependencies = [
+ "event-listener 2.5.3",
+]
+
 [[package]]
 name = "async_zip"
 version = "0.0.17"