Add flag enable_taskbar_for_direct_boot

When enabled, launcher will create some parts of the Taskbar prior to onUserUnlocked.

Bug: 324485921
Test: n/a adding flag
Flag: EXEMPT adding the flag
Change-Id: I0900cf634f229b1382faa39d3465c8e6d6191090
diff --git a/aconfig/launcher.aconfig b/aconfig/launcher.aconfig
index d3c5c01..b083390 100644
--- a/aconfig/launcher.aconfig
+++ b/aconfig/launcher.aconfig
@@ -694,3 +694,13 @@
     purpose: PURPOSE_BUGFIX
   }
 }
+
+flag {
+  name: "enable_taskbar_for_direct_boot"
+  namespace: "launcher"
+  description: "Initializes parts of Taskbar before onUserUnlocked"
+  bug: "324485921"
+  metadata {
+    purpose: PURPOSE_BUGFIX
+  }
+}