MediaTranscodingService: Add AIDL interface for MediaTranscodingService.

There are a lot of TODOs now in the code and they will be addressed
in the next few CLs. .

Bug: 145233472
Test: Build and Compile

Change-Id: I27d96b18ebca6f07bc24e4124fb48b0e79d387d2
diff --git a/media/libmediatranscoding/Android.bp b/media/libmediatranscoding/Android.bp
new file mode 100644
index 0000000..8f0e278
--- /dev/null
+++ b/media/libmediatranscoding/Android.bp
@@ -0,0 +1,15 @@
+// AIDL interfaces of MediaTranscoding.
+aidl_interface {
+    name: "mediatranscoding_aidl_interface",
+    local_include_dir: "aidl",
+    srcs: [
+        "aidl/android/media/IMediaTranscodingService.aidl",
+        "aidl/android/media/ITranscodingServiceClient.aidl",
+        "aidl/android/media/TranscodingErrorCode.aidl",
+        "aidl/android/media/TranscodingType.aidl",
+        "aidl/android/media/TranscodingVideoCodecType.aidl",
+        "aidl/android/media/TranscodingJob.aidl",
+        "aidl/android/media/TranscodingRequest.aidl",
+        "aidl/android/media/TranscodingResult.aidl",
+    ],
+}