[AI] Add rust example

WORKSPACE

@@ -58,7 +58,11 @@ go_dependencies()
 ### Rust Setup
 load("@rules_rust//rust:repositories.bzl", "rules_rust_dependencies", "rust_register_toolchains")
 rules_rust_dependencies()
-rust_register_toolchains()
+rust_register_toolchains(
+    versions=["1.78.0"],
+    # Specifies the Rust edition to use for the registered toolchains
+    edition = "2021",
+)
 
 ### Docker Setup
 load("@rules_oci//oci:dependencies.bzl", "rules_oci_dependencies")
@@ -127,8 +131,6 @@ opentelemetry_cpp_deps()
 load("@io_opentelemetry_cpp//bazel:extra_deps.bzl", "opentelemetry_extra_deps")
 opentelemetry_extra_deps()
 
-
-
 load("@aspect_bazel_lib//lib:repositories.bzl", "aspect_bazel_lib_dependencies")
 
 # aspect_bazel_lib depends on bazel_skylib

experimental/hello-rust/.gitignore

@@ -0,0 +1 @@
+/target

experimental/hello-rust/BUILD

@@ -0,0 +1,9 @@
+package(default_visibility = ["//visibility:public"])
+
+load("@rules_rust//rust:defs.bzl", "rust_binary")
+
+rust_binary(
+    name = "hello_world",
+    srcs = ["src/main.rs"],
+    deps = [],
+)

experimental/hello-rust/README.md

@@ -0,0 +1,10 @@
+## Rust Example
+
+### Init a project
+```
+cargo new hello_world
+```
+
+### References
+- [bazel rust](https://bazelbuild.github.io/rules_rust/)
+- [rust lang](https://doc.rust-lang.org/cargo/getting-started/first-steps.html)

experimental/hello-rust/src/main.rs

@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, world!");
+}