Create a sh_binary target for jars-to-module-info

This will enable its bp2build conversion, and is needed for java_system_modules support in Bazel

Change-Id: I4f3ff5e36c8cd7f78efbb42f641efb2f76a8b71d
Bug: 215230098
diff --git a/scripts/Android.bp b/scripts/Android.bp
index ddbba74..26fe432 100644
--- a/scripts/Android.bp
+++ b/scripts/Android.bp
@@ -231,3 +231,8 @@
     srcs: ["rustfmt.toml"],
     visibility: ["//visibility:public"],
 }
+
+sh_binary_host {
+    name: "jars-to-module-info-java",
+    src: "jars-to-module-info-java.sh",
+}