Add tests of SpaSearchProvider

Move SpaSearchProvider.kt to search/ folder
Deprecate setIsAllowSearch API in EntryBuilder

Bug: 256582545
Test: unit-test & local build gallery
Change-Id: I0fc9ef3e935e512f738cd07c9e3837a2ee1ad272
diff --git a/packages/SettingsLib/Spa/gallery/AndroidManifest.xml b/packages/SettingsLib/Spa/gallery/AndroidManifest.xml
index 71c52d9..37d6b42 100644
--- a/packages/SettingsLib/Spa/gallery/AndroidManifest.xml
+++ b/packages/SettingsLib/Spa/gallery/AndroidManifest.xml
@@ -36,7 +36,7 @@
         </activity>
 
         <provider
-            android:name="com.android.settingslib.spa.framework.SpaSearchProvider"
+            android:name="com.android.settingslib.spa.search.SpaSearchProvider"
             android:authorities="com.android.spa.gallery.search.provider"
             android:enabled="true"
             android:exported="false">