Include sdk versioning proto in art apex

Allows SdkExtensions to inspect its version to decide what the extension
sdk version is on-device.

Bug: 188787081
Test: m com.android.art and inspect
Change-Id: Iddcb91427e3624c6e0b1aa36f2aea30e370644ba
diff --git a/build/apex/Android.bp b/build/apex/Android.bp
index 78f62c4..c336d36 100644
--- a/build/apex/Android.bp
+++ b/build/apex/Android.bp
@@ -270,6 +270,7 @@
     prebuilts: [
         "art-linker-config",
         "com.android.art.artd.init.rc",
+        "current_sdkinfo",
     ],
     // ART APEXes depend on bouncycastle which is disabled for PDK builds.
     // Since the dependency is disabled, ART APEXes can't be built either.