Add in enum34 1.1.6 (58c4cd7)

This is a mercurial repo, d/led zip of src:
https://bitbucket.org/stoneleaf/enum34/get/1.1.6.zip

Also added in misc files (Android.bp, METADATA, NOTICE, etc)
And add myself and guangzhu to OWNERS.

Exempt-From-Owner-Approval:

Bug: 122778810
Test: None
Change-Id: I2dd62b9938f154fbe425da0475988ed1b99e6707
diff --git a/enum/Android.bp b/enum/Android.bp
new file mode 100644
index 0000000..e884f85
--- /dev/null
+++ b/enum/Android.bp
@@ -0,0 +1,27 @@
+// Copyright 2019 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+python_library {
+    name: "py-enum34",
+    host_supported: true,
+    srcs: [
+        "__init__.py",
+    ],
+    version: {
+        py2: {
+            enabled: true,
+        },
+    },
+    pkg_path: "enum",
+}