build: add bazel test rules for remainder of packages (#21053)

PR Close #21053

packages/service-worker/testing/BUILD.bazel

@@ -0,0 +1,13 @@
+package(default_visibility = ["//visibility:public"])
+
+load("@build_bazel_rules_typescript//:defs.bzl", "ts_library")
+
+ts_library(
+    name = "testing",
+    testonly = 1,
+    srcs = glob(["**/*.ts"]),
+    module_name = "@angular/service-worker/testing",
+    tsconfig = "//packages:tsconfig",
+    deps = [
+    ],
+)