Copy bluetooth proto from src/platform2/bluetooth/proto.

Copy the bluetooth proto form src/platform2/bluetooth/proto with the
intention of rehoming it here per the new layout.

BUG=chromium:1041872
TEST=None, will be integrated into new approach with src/config repo

Change-Id: I73d744879bf319f35589bfd6954bb859e22fcdda
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform2/bluetooth/proto/+/2053425
Reviewed-by: Andrew Lamb <andrewlamb@chromium.org>
Commit-Queue: David Burger <dburger@chromium.org>
Tested-by: David Burger <dburger@chromium.org>
diff --git a/config.proto b/config.proto
new file mode 100644
index 0000000..558cd27
--- /dev/null
+++ b/config.proto
@@ -0,0 +1,14 @@
+syntax = "proto3";
+
+package bluetooth;
+
+message BluetoothConfig {
+  // Enable powerd suspend management callbacks.
+  bool enable_suspend_management = 1;
+
+  // Expect bluetooth chip to have reset on resume.
+  bool reset_on_resume = 2;
+
+  // Stop the bluetooth adapter on suspend and start it on resume.
+  bool stop_on_suspend = 3;
+}