media.c2 aidl: Implement IGraphicBufferAllocator

Implement IGraphicBufferAllocator c2aidl interface.

Bug: 254050314
Change-Id: Ib7ad6d91291ce1ea7dcefdebe24d1f217abac44b
diff --git a/media/codec2/hal/client/Android.bp b/media/codec2/hal/client/Android.bp
index 61ec10e..38b3edf 100644
--- a/media/codec2/hal/client/Android.bp
+++ b/media/codec2/hal/client/Android.bp
@@ -23,6 +23,7 @@
     name: "libcodec2_client",
 
     srcs: [
+        "GraphicBufferAllocator.cpp",
         "GraphicsTracker.cpp",
         "client.cpp",
         "output.cpp",