Add a new system service for blob store management.

This change adds a bare-bones system service, implementation will follow
later.

Bug: 143559646
Test: atest cts/tests/BlobStore/src/com/android/cts/blob/BlobStoreManagerTest.java
Change-Id: Idf21dfcd11dd32a42b62c6ad965d6f5ad7eed1b4
diff --git a/config/preloaded-classes b/config/preloaded-classes
index 1b9898a..ab98e5b 100644
--- a/config/preloaded-classes
+++ b/config/preloaded-classes
@@ -546,6 +546,7 @@
 android.app.backup.IBackupManager$Stub
 android.app.backup.IBackupManager
 android.app.backup.SharedPreferencesBackupHelper
+android.app.blob.BlobStoreManagerFrameworkInitializer
 android.app.contentsuggestions.ContentSuggestionsManager
 android.app.job.IJobCallback$Stub$Proxy
 android.app.job.IJobCallback$Stub