Import 'clang-sys' package version 0.29.3

* Add OWNERS
* No Android.bp yet
Bug: 152884384
Test: make

Change-Id: I1d652df9a2f868b46957554a8ade394acbfe7af0
diff --git a/METADATA b/METADATA
new file mode 100644
index 0000000..77bae4d
--- /dev/null
+++ b/METADATA
@@ -0,0 +1,19 @@
+name: "clang-sys"
+description: "Rust bindings for libclang."
+third_party {
+  url {
+    type: HOMEPAGE
+    value: "https://crates.io/crates/clang-sys"
+  }
+  url {
+    type: GIT
+    value: "https://github.com/KyleMayes/clang-sys"
+  }
+  version: "0.29.3"
+  license_type: NOTICE
+  last_upgrade_date {
+    year: 2020
+    month: 3
+    day: 31
+  }
+}