Bazel: Add fixes for --incompatible_load_java_rules_from_bzl

Change-Id: I0b0f8e080a5321b744bbaee24faa5a44301d2da1
diff --git a/BUILD b/BUILD
index aac05ab..81ab40d 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",