feat(scaffolding): add Rust package generator

tools/scaffolding/templates/BUILD.template

@@ -0,0 +1,26 @@
+load("@rules_rust//rust:defs.bzl", "rust_binary", "rust_library", "rust_test")
+
+rust_library(
+  name = "{CRATE_NAME}",
+  crate_name = "{CRATE_NAME}",
+  srcs = [
+    "{CRATE_NAME}.rs",
+    "{CRATE_NAME}_test.rs",
+  ],
+)
+
+rust_test(
+  name = "{CRATE_NAME}_test",
+  crate = ":{CRATE_NAME}",
+)
+
+rust_binary(
+  name = "{CRATE_NAME}_cli",
+  crate_name = "{CRATE_NAME}_cli",
+  srcs = [
+    "{CRATE_NAME}_main.rs",
+  ],
+  deps = [
+    ":{CRATE_NAME}",
+  ],
+)

tools/scaffolding/templates/Cargo.toml.template

@@ -0,0 +1,11 @@
+[package]
+name = "{CRATE_NAME}"
+version = "0.1.0"
+edition = "2024"
+
+[lib]
+path = "{CRATE_NAME}.rs"
+
+[[bin]]
+name = "{CRATE_NAME}_cli"
+path = "{CRATE_NAME}_main.rs"

tools/scaffolding/templates/binary.rs.template

@@ -0,0 +1,3 @@
+fn main() {
+    {CRATE_NAME}::run();
+}

tools/scaffolding/templates/library.rs.template

@@ -0,0 +1,5 @@
+#[cfg(test)]
+#[path = "{CRATE_NAME}_test.rs"]
+mod tests;
+
+pub fn run() {}

tools/scaffolding/templates/test.rs.template

@@ -0,0 +1,6 @@
+use super::run;
+
+#[test]
+fn runs() {
+    run();
+}