idsig: Include the APK digest

Get the best APK digest from the APK and include it in the generated
idsig.

Test: atest libidsig.test
Bug: 234564414
Change-Id: If55eab3bb62131bcdb9dfeb6000b9a5ba7ab9236
diff --git a/libs/idsig/Android.bp b/libs/idsig/Android.bp
index 2e9c663..25eeae4 100644
--- a/libs/idsig/Android.bp
+++ b/libs/idsig/Android.bp
@@ -10,6 +10,7 @@
     prefer_rlib: true,
     rustlibs: [
         "libanyhow",
+        "libapkverify",
         "libbyteorder",
         "libnum_traits",
         "libopenssl",