Bazel: Add fixes for --incompatible_load_java_rules_from_bzl

Change-Id: I3ddcc6da5db118467ed0e52b6a35546d5baf4b93
diff --git a/BUILD b/BUILD
index ba18e42..68ad690 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",