Extract libmicrodroid_metadata (rust_library)

from microdroid_manager. Virtualizationservice will use it to make a
payload disk image.

Bug: 190503456
Test: m
Change-Id: Ifd7d2ef60b7a63dcc373a78dbcbe26f472dc1bc7
diff --git a/microdroid_manager/Android.bp b/microdroid_manager/Android.bp
index 30f8481..b0c25e0 100644
--- a/microdroid_manager/Android.bp
+++ b/microdroid_manager/Android.bp
@@ -13,7 +13,7 @@
         "libanyhow",
         "libkeystore2_system_property-rust",
         "liblog_rust",
-        "libmicrodroid_metadata_proto_rust",
+        "libmicrodroid_metadata",
         "libmicrodroid_payload_config",
         "libprotobuf",
         "libserde_json",