Add AV1 Encoder to the registry and XMLs

This will enable AV1 SW Encoder and make it visible to the system

Bug: 246859000
Test: atest VideoCodecTest
Change-Id: I7996ea9095ece8f507281b9f09f21e8aff5a6ad2
diff --git a/media/module/codecserviceregistrant/Android.bp b/media/module/codecserviceregistrant/Android.bp
index 5637b37..f3a1723 100644
--- a/media/module/codecserviceregistrant/Android.bp
+++ b/media/module/codecserviceregistrant/Android.bp
@@ -61,6 +61,7 @@
         "libcodec2_soft_vp9dec",
         // "libcodec2_soft_av1dec_aom",  // replaced by the gav1 implementation
         "libcodec2_soft_av1dec_gav1",
+        "libcodec2_soft_av1enc",
         "libcodec2_soft_vp8enc",
         "libcodec2_soft_vp9enc",
         "libcodec2_soft_rawdec",