Add build files for strum crate

- cargo_embargo.json generated using `cargo_embargo autoconfig
  cargo_embargo.json` without modifications
- Android.bp generated using `cargo_embargo generate cargo_embargo.json`
  and added `license` rules manually.

Bug: 305781607
Test: m libstrum
Change-Id: Idd80d0fa2e6e4aa644b84bd931ef5143999f0b7d
diff --git a/Android.bp b/Android.bp
new file mode 100644
index 0000000..e3fb17c
--- /dev/null
+++ b/Android.bp
@@ -0,0 +1,33 @@
+// This file is generated by cargo_embargo.
+// Do not modify this file as changes will be overridden on upgrade.
+
+package {
+    default_applicable_licenses: ["external_rust_crates_strum_license"],
+}
+
+license {
+    name: "external_rust_crates_strum_license",
+    visibility: [":__subpackages__"],
+    license_kinds: ["SPDX-license-identifier-MIT"],
+    license_text: ["LICENSE"],
+}
+
+rust_library {
+    name: "libstrum",
+    host_supported: true,
+    crate_name: "strum",
+    cargo_env_compat: true,
+    cargo_pkg_version: "0.25.0",
+    srcs: ["src/lib.rs"],
+    edition: "2018",
+    features: [
+        "default",
+        "std",
+    ],
+    apex_available: [
+        "//apex_available:platform",
+        "//apex_available:anyapex",
+    ],
+    product_available: true,
+    vendor_available: true,
+}
diff --git a/cargo_embargo.json b/cargo_embargo.json
new file mode 100644
index 0000000..cb908d7
--- /dev/null
+++ b/cargo_embargo.json
@@ -0,0 +1,3 @@
+{
+  "run_cargo": false
+}