Add top-level Android.bp with test ownership.

Since this is a manually added Android.bp, also ensure we run bpfmt.

Change-Id: I1a38fec072622f684ddd9ddab92e983d5f2db531
Bug: 339424309
Test: treehugger
diff --git a/PREUPLOAD.cfg b/PREUPLOAD.cfg
index 421696d..9adfe60 100644
--- a/PREUPLOAD.cfg
+++ b/PREUPLOAD.cfg
@@ -1,2 +1,5 @@
 [Hook Scripts]
 check = ${REPO_ROOT}/development/tools/external_crates/android_cargo.py run --bin crate_health --manifest-path ${REPO_ROOT}/development/tools/external_crates/Cargo.toml -- preupload-check ${PREUPLOAD_FILES}
+
+[Builtin Hooks]
+bpfmt = true
diff --git a/crates/Android.bp b/crates/Android.bp
new file mode 100644
index 0000000..2c6aa16
--- /dev/null
+++ b/crates/Android.bp
@@ -0,0 +1,3 @@
+package {
+    default_team: "trendy_team_android_rust",
+}