Add extra tools to config.toml

pkg.info

@@ -1,9 +1,15 @@
 name: rustc
 description: The rust programming language compiler
 version: 1.89.0
+revision: 2
 url: https://www.rust-lang.org/
 license: Apache-2.0 or MIT
 architecture: any
 depends: ["gcc","glibc","libffi","libxml2","llvm","ncurses","openssl","sqlite","xz-utils","zlib","zstd"]
 make_depends: ["cmake","curl","python3"]
 type: source
+split_packages:
+  - name: rustc
+  - name: rust-src
+    description: Rust standard library source code
+    depends: ["rustc"]