Add first widget Preference for SPA

This also including a codelab app to show the demo.

Bug: 235727273
Test: android unit test
Ignore-AOSP-First: new library not in AOSP
Change-Id: Ib4d6e05c24ba10ca7749702524e3c64c114b1471
diff --git a/packages/SettingsLib/Spa/tests/Android.bp b/packages/SettingsLib/Spa/tests/Android.bp
new file mode 100644
index 0000000..037d8c4
--- /dev/null
+++ b/packages/SettingsLib/Spa/tests/Android.bp
@@ -0,0 +1,36 @@
+//
+// Copyright (C) 2022 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+package {
+    default_applicable_licenses: ["frameworks_base_license"],
+}
+
+android_test {
+    name: "SpaLibTests",
+    test_suites: ["device-tests"],
+
+    srcs: ["src/**/*.kt"],
+
+    static_libs: [
+        "SpaLib",
+        "androidx.test.runner",
+        "androidx.test.ext.junit",
+        "androidx.compose.runtime_runtime",
+        "androidx.compose.ui_ui-test-junit4",
+        "androidx.compose.ui_ui-test-manifest",
+    ],
+    kotlincflags: ["-Xjvm-default=all"],
+}