Bazel: Add fixes for --incompatible_load_java_rules_from_bzl

Change-Id: I0a217a2fd337f923f2935d008d965a0cc24f8b78
diff --git a/BUILD b/BUILD
index 5655497..2bbfec0 100644
--- a/BUILD
+++ b/BUILD
@@ -1,3 +1,4 @@
+load("@rules_java//java:defs.bzl", "java_library")
 load("//tools/bzl:junit.bzl", "junit_tests")
 load(
     "//tools/bzl:plugin.bzl",