enc stat: Add Encoding Statistics keys to CCodecConfig

Each individual encoding statistics keys, i.e. average_qp
and picture_type are added.

Bug: 205793764
Bug: 203696003
Test: cts
Change-Id: Ia755f4b05f38a2b1aa79bd11880f7600e7ff7cd6
diff --git a/media/codec2/sfplugin/CCodecConfig.cpp b/media/codec2/sfplugin/CCodecConfig.cpp
index 03418d9..0899e99 100644
--- a/media/codec2/sfplugin/CCodecConfig.cpp
+++ b/media/codec2/sfplugin/CCodecConfig.cpp
@@ -953,6 +953,12 @@
             return value == 0 ? C2_FALSE : C2_TRUE;
         }));
 
+    add(ConfigMapper(KEY_VIDEO_QP_AVERAGE, C2_PARAMKEY_AVERAGE_QP, "value")
+        .limitTo(D::ENCODER & D::VIDEO & D::READ));
+
+    add(ConfigMapper(KEY_PICTURE_TYPE, C2_PARAMKEY_PICTURE_TYPE, "value")
+        .limitTo(D::ENCODER & D::VIDEO & D::READ));
+
     /* still to do
     constexpr char KEY_PUSH_BLANK_BUFFERS_ON_STOP[] = "push-blank-buffers-on-shutdown";