Add java_fuzz module to build java fuzzers

This change adds a new module to soong to be able to build Java fuzz
targets be able to run using Jazzer. Jazzer is an open source fuzzing engine
supported by OSS-Fuzz.

Bug: 211671266
Test: go test -run TestJavaFuzz
Change-Id: Id7c346694f5986f6e15210c359fd533fbb7001eb
diff --git a/java/Android.bp b/java/Android.bp
index 8835b44..c062941 100644
--- a/java/Android.bp
+++ b/java/Android.bp
@@ -44,6 +44,7 @@
         "dexpreopt_config.go",
         "droiddoc.go",
         "droidstubs.go",
+        "fuzz.go",
         "gen.go",
         "genrule.go",
         "hiddenapi.go",