Use tool calling instead of XML parsing to generate edit operations (#15385)

Release Notes:

- N/A

---------

Co-authored-by: Nathan <nathan@zed.dev>

Cargo.lock

@@ -435,7 +435,6 @@ dependencies = [
  "rand 0.8.5",
  "regex",
  "rope",
- "roxmltree 0.20.0",
  "schemars",
  "search",
  "semantic_index",
@@ -2641,7 +2640,9 @@ dependencies = [
  "language_model",
  "project",
  "rand 0.8.5",
+ "schemars",
  "serde",
+ "serde_json",
  "settings",
  "smol",
  "text",
@@ -4237,7 +4238,7 @@ version = "0.5.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6a595cb550439a117696039dfc69830492058211b771a2a165379f2a1a53d84d"
 dependencies = [
- "roxmltree 0.19.0",
+ "roxmltree",
 ]
 
 [[package]]
@@ -8918,12 +8919,6 @@ version = "0.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3cd14fd5e3b777a7422cca79358c57a8f6e3a703d9ac187448d0daf220c2407f"
 
-[[package]]
-name = "roxmltree"
-version = "0.20.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6c20b6793b5c2fa6553b250154b78d6d0db37e72700ae35fad9387a46f487c97"
-
 [[package]]
 name = "rpc"
 version = "0.1.0"
@@ -11878,7 +11873,7 @@ dependencies = [
  "kurbo",
  "log",
  "pico-args",
- "roxmltree 0.19.0",
+ "roxmltree",
  "simplecss",
  "siphasher 1.0.1",
  "strict-num",