Add initial scripting_tool (#26066)

Just a basic implementation so we can start trying it out.

Release Notes:

- N/A

---------

Co-authored-by: Marshall <marshall@zed.dev>
Co-authored-by: Michael <michael@zed.dev>

crates/scripting_tool/Cargo.toml

@@ -0,0 +1,24 @@
+[package]
+name = "scripting_tool"
+version = "0.1.0"
+edition.workspace = true
+publish.workspace = true
+license = "GPL-3.0-or-later"
+
+[lints]
+workspace = true
+
+[lib]
+path = "src/scripting_tool.rs"
+doctest = false
+
+[dependencies]
+anyhow.workspace = true
+assistant_tool.workspace = true
+gpui.workspace = true
+mlua.workspace = true
+schemars.workspace = true
+serde.workspace = true
+serde_json.workspace = true
+workspace.workspace = true
+regex.workspace = true