Bazel: Add fixes for --incompatible_load_java_rules_from_bzl

Change-Id: I7cd72a646ff77210817b067ea4f7a1a8cbc2d0c2
diff --git a/BUILD b/BUILD
index ea1fc3a..b050961 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",