edit predictions: Initial Tree-sitter context gathering (#38372)

Release Notes:

- N/A

Co-authored-by: Agus <agus@zed.dev>
Co-authored-by: Oleksiy <oleksiy@zed.dev>
Co-authored-by: Finn <finn@zed.dev>

Cargo.lock

@@ -5140,17 +5140,23 @@ version = "0.1.0"
 dependencies = [
  "anyhow",
  "arrayvec",
+ "clap",
  "collections",
  "futures 0.3.31",
  "gpui",
  "indoc",
+ "itertools 0.14.0",
  "language",
  "log",
+ "ordered-float 2.10.1",
  "pretty_assertions",
  "project",
+ "regex",
+ "serde",
  "serde_json",
  "settings",
  "slotmap",
+ "strum 0.27.1",
  "text",
  "tree-sitter",
  "util",