Import protobuf-2.14.0

* Add OWNERS and Android.bp
* add generated version.rs into out

Bug: 143953733
Test: make
Change-Id: Ib53a973b74679c4dd78e2de2fa54141e55048c17
diff --git a/METADATA b/METADATA
new file mode 100644
index 0000000..50ef5ab
--- /dev/null
+++ b/METADATA
@@ -0,0 +1,19 @@
+name: "protobuf"
+description: "Rust implementation of Google protocol buffers"
+third_party {
+  url {
+    type: HOMEPAGE
+    value: "https://crates.io/crates/protobuf"
+  }
+  url {
+    type: GIT
+    value: "https://github.com/stepancheg/rust-protobuf"
+  }
+  version: "2.14.0"
+  license_type: NOTICE
+  last_upgrade_date {
+    year: 2020
+    month: 6
+    day: 3
+  }
+}