Add METADATA to frameworks/native: Apache2+MIT+BSD+UNICODE=NOTICE

LPGL+GPL only appears in tests

Bug: 68860345
Bug: 69058154
Bug: 151953481

Test: no code changes

Change-Id: Ic304b9a98832632a6e21ca6d410bf11b321312c6
diff --git a/METADATA b/METADATA
new file mode 100644
index 0000000..d97975c
--- /dev/null
+++ b/METADATA
@@ -0,0 +1,3 @@
+third_party {
+  license_type: NOTICE
+}