Camera: add offline session API skeleton

Test: N/A, no implementation yet
Bug: 135142453
Change-Id: I497e42433d4d49466fe37467d4ff66e8583c55df
diff --git a/camera/Android.bp b/camera/Android.bp
index b288bcf..ea7259a 100644
--- a/camera/Android.bp
+++ b/camera/Android.bp
@@ -85,6 +85,7 @@
         "aidl/android/hardware/ICameraServiceProxy.aidl",
         "aidl/android/hardware/camera2/ICameraDeviceCallbacks.aidl",
         "aidl/android/hardware/camera2/ICameraDeviceUser.aidl",
+        "aidl/android/hardware/camera2/ICameraOfflineSession.aidl",
     ],
     path: "aidl",
 }