Factor out HelpUtils into @SystemAPI lib

This is the first of a few sub-libraries that will get factored out of
the settings lib. These libs will be included by mainline modules which
are compiles against system-api.

Bug: 110953302
Test: Looked at UI
      m -j RunRoboSettingsLibTests
Change-Id: I16347e565aca554d6a8653df35765c2194479e78
diff --git a/packages/SettingsLib/HelpUtils/Android.bp b/packages/SettingsLib/HelpUtils/Android.bp
new file mode 100644
index 0000000..af60185
--- /dev/null
+++ b/packages/SettingsLib/HelpUtils/Android.bp
@@ -0,0 +1,9 @@
+android_library {
+    name: "SettingsLibHelpUtils",
+
+    srcs: ["src/**/*.java"],
+    resource_dirs: ["res"],
+
+    sdk_version: "system_current",
+    min_sdk_version: "21",
+}